Seasonal Performance of a High-Frequency/ Automatic Link

NUWC-NPT Technical Report 11,106-2 7 May 1999

Seasonal Performance of a High-Frequency/ Automatic Link Establishment (HF/ALE) Radio Network Operating at Mid to High Latitudes in the Southern Hemisphere (Volume 2—Data Plots)

Patrick E. Gilles Joseph R. Katan NUWC Division Newport

Robert J. Pellowski Tele-Technologies, Inc.

'*" *. ytöBSEA WARF4/>

mm 'fisvn NEWPOOT,*

Naval Undersea Warfare Center Division Newport, Rhode Island

Approved for public release; distribution unlimited.

JM?»i QUALITY INSPECTED 8 19991223 012

PREFACE

This report was prepared under joint sponsorship of the Office of Naval Research (ONR), Submarine Communications Block Program (program element 62232N); the National Science Foundation, Office of Polar Programs (NFS/OPP); and the Naval Undersea Warfare Center (NUWC) Division Newport, Independent Research/Independent Exploratory Development Program (program element 62936N). The principal investigator for this task was Joseph R. Katan (Code 3411); program manager for the ONR Submarine Communications Program is Frederick C. Allard (Code 3496); the NSF/OPP project engineer is Patrick Smith. The ONR project sponsor is Sherman Gee (ONR 313); program manager for ONR research funding at NUWC Division Newport is Richard B. Philips (Code 102).

The technical reviewer for this report was Basile Panoutsopoulos (Code 3413).

The authors would like to thank the many people who contributed to the success of this enormous undertaking. Special thanks to Brian L. Pease and Paul M. Mileski for their support in Antarctica and to Edwin A. Wolkoff for his creative insight. Thanks go to Patrick C. Smith, sponsor at NSF/OPP, who persisted in making the required links, to the men and women of the U.S. Navy stationed at the U.S. Naval Support Force, Antarctica Detachment (Christchurch, New Zealand) and the personnel at the Antarctic Support Unit who have been associated with this task. Finally, a special thanks to the other half of the team, our mates down under at the Defence Science and Technology Organisation and the Australian Antarctic Division, particularly to John R. Tilbrook, our Australian counterpart.

Reviewed and Approved: 7 May 1999

Joe Perry Head, Submarine Electromagnetic Systems Department

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7 May 1999 Final 4. TITLE AND SUBTITLE

SEASONAL PERFORMANCE OF A HIGH-FREQUENCY/AUTOMATIC LINK ESTABLISHMENT (HF/ALE) RADIO NETWORK OPERATING AT MID TO HIGH LATITUDES IN THE SOUTHERN HEMISPHERE (VOLUME 2— DATA PLOTS)

6. AUTHOR(S)

Patrick E. Gilles, Joseph R. Katan, and Robert J. Pellowski

7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES)

Naval Undersea Warfare Center Division 1176 Howell Street Newport, Rl 02841-1708

9. SPONSORING/MONITORING AGENCY NAME(S) AND ADDRESS(ES)

Office of Naval Research National Science Foundation ONR 313 Office of Polar Programs 800 North Quincy Street 1800 G Street, NW Arlington, VA 22217-5160 Washington, DC 20660

5. FUNDING NUMBERS

PE 62936N,62232N

PERFORMING ORGANIZATION REPORT NUMBER

TR 11,106-2

10. SPONSORING/MONITORING AGENCY REPORT NUMBER

11. SUPPLEMENTARY NOTES

12a. DISTRIBUTION/AVAILABILITY STATEMENT

Approved for public release; distribution is unlimited.

12b. DISTRIBUTION CODE

13. ABSTRACT (Maxim urn 200 words)

A high-frequency (HF)/automatic link establishment network was established between four sites located in Christchurch in New Zealand, Salisbury in Australia, and McMurdo and Davis Station in Antarctica. The experiment was a joint effort between the U.S. Naval Undersea Warfare Center and the Australian Defence Science and Technology Organisation.

Hourly link quality analysis data were collected between September 1992 and November 1994. The primary goal was to study the potential benefits of introducing an automatic frequency management system into the daily operations of the HF communications links involving mid- to high-latitude propagation paths. Ten frequencies between 5 and 26 MHz were evaluated and the data were plotted versus time-of-day and season and compared to predicted results.

This report is presented in two volumes. Volume 1 (TR 11,106-1) contains the background, site descriptions, equipment and experiment design information, and conclusions. Volume 2 (TR 11,106-2) contains the supporting data plots.

14. SUBJECT TERMS Automatic link establishment network High-frequency communications

17. SECURITY CLASSIFICATION OF REPORT

Unclassified

18. SECURITY CLASSIFICATION OF THIS PAGE

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19. SECURITY CLASSIFICATION OF ABSTRACT

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16. PRICE CODE

20. LIMITATION OF ABSTRACT

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NSN 7540-01-280-5500 Standard Form 298 (Rev 2-89) Prescribed by ANSI Std Z39-18 298-102

LIST OF ILLUSTRATIONS

Figure Page

1 Circuit Availability by Season, Christchurch to Davis, 1993 and 1994 2 2 Circuit Availability by Season, Christchurch to McMurdo, 1993 and 1994 3 3 Circuit Availability by Season, Christchurch to Salisbury, 1993 and 1994 4 4 Circuit Availability by Season, Davis to Christchurch, 1993 and 1994 5 5 Circuit Availability by Season, Davis to McMurdo, 1993 and 1994 6 6 Circuit Availability by Season, Davis to Salisbury, 1993 and 1994 7 7 Circuit Availability by Season, Salisbury to Christchurch, 1993 and 1994 8 8 Circuit Availability by Season, Salisbury to Davis, 1993 and 1994 9 9 Circuit Availability by Season, Salisbury to McMurdo, 1993 and 1994 10

10 Link Availability and Circuit Availability by Season, Christchurch to Davis, 1993.. 11

11 Link Availability and Circuit Availability by Season, Christchurch to McMurdo, 1993 11

12 Link Availability and Circuit Availability by Season, Christchurch to McMurdo, 1994 12

13 Link Availability and Circuit Availability by Season, Christchurch to Salisbury, 1993 12

14 Link Availability and Circuit Availability by Season, Christchurch to Salisbury, 1994 13

15 Link Availability and Circuit Availability by Season, Davis to Christchurch, 1993 13

16 Link Availability and Circuit Availability by Season, Davis to McMurdo, 1993 14

17 Link Availability and Circuit Availability by Season, Davis to McMurdo, 1994 14

18 Link Availability and Circuit Availability by Season, Davis to Salisbury, 1993 15

19 Link Availability and Circuit Availability by Season, Davis to Salisbury, 1994 15

20 Link Availability and Circuit Availability by Season, Salisbury to Christchurch, 1993 16

21 Link Availability and Circuit Availability by Season, Salisbury to Christchurch, 1994 16

LIST OF ILLUSTRATIONS (Cont'd)

Figure page

22 Link Availability and Circuit Availability by Season, Salisbury to Davis, 1993 17

23 Link Availability and Circuit Availability by Season, Salisbury to Davis, 1994 17

24 Link Availability and Circuit Availability by Season, Salisbury to McMurdo, 1993 18

25 Link Availability and Circuit Availability by Season, Salisbury to McMurdo, 1994 18

26 Percent Availability and SNR by Frequency, Salisbury to McMurdo, Fall 1993 19

27 Percent Availability and SNR by Frequency, Salisbury to McMurdo, Winter 1993 19

28 Percent Availability and SNR by Frequency, Salisbury to McMurdo, Spring 1993 20

29 Percent Availability and SNR by Frequency, Salisbury to McMurdo, Summer 1993 20

30 Percent Availability and SNR by Frequency, Salisbury to McMurdo, Fall 1994 21

31 Percent Availability and SNR by Frequency, Salisbury to McMurdo, Winter 1994 22

32 Percent Availability and SNR by Frequency, Salisbury to McMurdo, Spring 1994 22

33 Percent Availability and SNR by Frequency, Salisbury to Davis, Fall 1993 22

34 Percent Availability and SNR by Frequency, Salisbury to Davis, Winter 1993 23

35 Percent Availability and SNR by Frequency, Salisbury to Davis, Spring 1993 23

36 Percent Availability and SNR by Frequency, Salisbury to Davis, Summer 1994 24

37 Percent Availability and SNR by Frequency, Salisbury to Christchurch, Fall 1993 24

38 Percent Availability and SNR by Frequency, Salisbury to Christchurch, Spring 1993 25


Figure Page

39 Percent Availability and SNR by Frequency, Salisbury to Christchurch, Summer 1994.. 25

40 Percent Availability and SNR by Frequency, Salisbury to Christchurch, Winter 1994 26

41 Percent Availability and SNR by Frequency, Salisbury to Christchurch, Spring 1994 26

42 Percent Availability and SNR by Frequency, Christchurch to Salisbury, Winter 1993 27

43 Percent Availability and SNR by Frequency, Christchurch to Salisbury, Spring 1993 27

44 Percent Availability and SNR by Frequency, Christchurch to Salisbury, Winter 1994 28

45 Percent Availability and SNR by Frequency, Christchurch to Salisbury, Spring 1994 28

46 Percent Availability and SNR by Frequency, Christchurch to McMurdo, Winter 1993 29

47 Percent Availability and SNR by Frequency, Christchurch to McMurdo Spring 1993 29

48 Percent Availability and SNR by Frequency, Christchurch to McMurdo, Winter 1994 30

49 Percent Availability and SNR by Frequency, Christchurch to Davis, Winter 1993 30

50 Percent Availability and SNR by Frequency, Davis to Salisbury, Fall 1993 31 51 Percent Availability and SNR by Frequency, Davis to Salisbury, Winter 1993 31 52 Percent Availability and SNR by Frequency, Davis to Salisbury, Spring 1993 32 53 Percent Availability and SNR by Frequency, Davis to Salisbury, Summer 1994 32 54 Percent Availability and SNR by Frequency, Davis to Christchurch, Winter 1993.. 33 55 Percent Availability and SNR by Frequency, Davis to Christchurch, Spring 1993.. 33 56 Percent Availability and SNR by Frequency, Davis to McMurdo, Winter 1993 34 57 Percent Availability and SNR by Frequency, Davis to McMurdo, Spring 1993 34 58 Percent Availability and SNR by Frequency, Davis to McMurdo, Summer 1994.... 35 59 Number of Usable Frequencies at Each Link Attempt, Christchurch to

Davis, 1993 35 60 Number of Usable Frequencies at Each Link Attempt, Christchurch to

McMurdo, 1993 36

in


Figure Page

61 Number of Usable Frequencies at Each Link Attempt, Christchurch to McMurdo, 1994 36

62 Number of Usable Frequencies at Each Link Attempt, Christchurch to Salisbury, 1993 37

63 Number of Usable Frequencies at Each Link Attempt, Christchurch to Salisbury, 1994 37

64 Number of Usable Frequencies at Each Link Attempt, Davis to Christchurch, 1993 38

65 Number of Usable Frequencies at Each Link Attempt, Davis to McMurdo, 1993 ... 38 66 Number of Usable Frequencies at Each Link Attempt, Davis to McMurdo, 1994... 39 67 Number of Usable Frequencies at Each Link Attempt, Davis to Salisbury, 1993 .... 39 68 Number of Usable Frequencies at Each Link Attempt, Davis to Salisbury, 1994 .... 40 69 Number of Usable Frequencies at Each Link Attempt, Salisbury to

Christchurch, 1993 40 70 Number of Usable Frequencies at Each Link Attempt, Salisbury to

Christchurch, 1994 41 71 Number of Usable Frequencies at Each Link Attempt, Salisbury to

Davis, 1993 41 72 Number of Usable Frequencies at Each Link Attempt, Salisbury to

Davis, 1994 42 73 Number of Usable Frequencies at Each Link Attempt, Salisbury to

McMurdo, 1993 42 74 Number of Usable Frequencies at Each Link Attempt, Salisbury to

McMurdo, 1994 43 75 Percent Availability of Each Frequency Group by Season,

Christchurch to Davis 44 76 Percent Availability of Each Frequency Group by Season,

Christchurch to McMurdo 45 77 Percent Availability of Each Frequency Group by Season,

Christchurch to Salisbury 46 78 Percent Availability of Each Frequency Group by Season,

Davis to Christchurch 47 79 Percent Availability of Each Frequency Group by Season,

Davis to McMurdo 48 80 Percent Availability of Each Frequency Group by Season,

Davis to Salisbury 49

IV


Figure Page

81 Percent Availability of Each Frequency Group by Season, Salisbury to Christchurch 50

82 Percent Availability of Each Frequency Group by Season, Salisbury to Davis 51

83 Percent Availability of each Frequency Group by Season, Salisbury to McMurdo 52

84 Exceedance (90%, 50%, and 10%) for Best Frequency, Christchurch-to-Davis Link by Month, Winter 1993 (6-dB Minimum Measured SINAD) 53

85 Exceedance (90%, 50%, and 10%) for Best Frequency, Christchurch-to-McMurdo Link by Month, Winter 1993 (6-dB Minimum Measured SINAD) 53

86 Exceedance (90%, 50%, and 10%) for Best Frequency, Christchurch-to-McMurdo Link by Month, Spring 1993 (6-dB Minimum Measured SINAD) 54


88 Exceedance (90%, 50%, and 10%) for Best Frequency, Christchurch-to-Salisbury Link by Month, Winter 1993 (6-dB Minimum Measured SINAD) 55

89 Exceedance (90%, 50%, and 10%) for Best Frequency, Christchurch-to-Salisbury Link by Month, Spring 1993 (6-dB Minimum Measured SINAD) 55


91 Exceedance (90%, 50%, and 10%) for Best Frequency, Christchurch-to-Salisbury Link by Month, Spring 1994 (6-dB Minimum Measured SINAD) 56

92 Exceedance (90%, 50%, and 10%) for Best Frequency, Davis-to-Christchurch Link by Month, Winter 1993 (6-dB Minimum Measured SINAD) 57

93 Exceedance (90%, 50%, and 10%) for Best Frequency, Davis-to-Christchurch Link by Month, Spring 1993 (6-dB Minimum Measured SINAD) 57

94 Exceedance (90%, 50%, and 10%) for Best Frequency, Davis-to-Christchurch Link by Month, Summer/Winter 1993 (6-dB Minimum Measured SINAD)...... 58

95 Exceedance (90%, 50%, and 10%) for Best Frequency, Davis-to-McMurdo Link by Month, Winter 1993 (6-dB Minimum Measured SINAD) 58

96 Exceedance (90%, 50%, and 10%) for Best Frequency, Davis-to-McMurdo Link by Month, Spring 1993 (6-dB Minimum Measured SINAD) 59

97 Exceedance (90%, 50%, and 10%) for Best Frequency, Davis-to-McMurdo Link by Month, Summer 1993/1994 (6-dB Minimum Measured SINAD) 59


Figure page

98 Exceedance (90%, 50%, and 10%) for Best Frequency, Davis-to-Salisbury Link by Month, Summer 1992/1993 (6-dB Minimum Measured SINAD) 60

99 Exceedance (90%, 50%, and 10%) for Best Frequency, Davis-to-Salisbury Link by Month, Fall 1993 (6-dB Minimum Measured SINAD) 60

100 Exceedance (90%, 50%, and 10%) for Best Frequency, Davis-to-Salisbury Link by Month, Winter 1993 (6-dB Minimum Measured SINAD) 61

101 Exceedance (90%, 50%, and 10%) for Best Frequency, Davis-to-Salisbury Link by Month, Spring 1993 (6-dB Minimum Measured SINAD) 61


103 Exceedance (90%, 50%, and 10%) for Best Frequency, McMurdo-to-Christchurch Link by Month, Spring 1993 (6-dB Minimum Measured SINAD) 62

104 Exceedance (90%, 50%, and 10%) for Best Frequency, McMurdo-to-Davis Link by Month, Summer 1992/1993 (6-dB Minimum Measured SINAD) 63

105 Exceedance (90%, 50%, and 10%) for Best Frequency, McMurdo-to-Davis Link by Month, Fall 1993 (6-dB Minimum Measured SINAD) 63

106 Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to-Christchurch Link by Month, Winter 1993 (6-dB Minimum Measured SINAD) 64

107 Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to-Christchurch Link by Month, Spring 1993 (6-dB Minimum Measured SINAD) 64

108 Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to-Christchurch Link by Month, Summer 1993/1994 (6-dB Minimum Measured SINAD) 65



111 Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to-Davis Link by Month, Summer 1992/1993 (6-dB Minimum Measured SINAD) 66

112 Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to-Davis Link by Month, Fall 1993 (6-dB Minimum Measured SINAD) 67

113 Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to-Davis Link by Month, Winter 1993 (6-dB Minimum Measured SINAD) 67

114 Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to-Davis Link by Month, Spring 1993 (6-dB Minimum Measured SINAD) 68

Figur

115

116

117

118

119

120

121

122

123

124

125

126


Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to-Davis Link by Month, Summer 1993/1994 (6-dB Minimum Measured SINAD)....

Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to-McMurdo Link by Month, Summer 1992/1993 (6-dB Minimum Measured SINAD)

Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to-McMurdo Link bv Month Fall 1993 (6-dB Minimum Measured SINAD)

Page

68

69

69

70

70

71

71

72

72

73

73

74

74

75

75

76

76

vii

Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to-McMurdo T ink bv Month Winter 1993 (6-dB Minimum Measured SINAD)

Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to-McMurdo Link bv Month Snrine 1993 (6-dB Minimum Measured SINAD)


Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to-McMurdo Link bv Month Fall 1994 (6-dB Minimum Measured SINAD)

Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to-McMurdo Link bv Month Winter 1994 (6-dB Minimum Measured SINAD)

Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to-McMurdo T ink bv Month Sorins 1994 (6-dB Minimum Measured SINAD)


Exceedance (90%, 50%, and 10%) for Best Frequency, Christchurch-to-Davis Link by Month Winter 1993 (12-dB Minimum Measured SINAD)

Exceedance (90%, 50%, and 10%) for Best Frequency, Christchurch-to-McMurdo Link by Month Winter 1993 (12-dB Minimum Measured SINAD)

127 Exceedance (90%, 50%, and 10%) for Best Frequency, Christchurch-to-McMurdo Link bv Month Sorine 1993 (12-dB Minimum Measured SINAD)

128 Exceedance (90%, 50%, and 10%) for Best Frequency, Christchurch-to-Salisbury Link bv Month Winter 1993 (12-dB Minimum Measured SINAD)

129

130

131

Exceedance (90%, 50%, and 10%) for Best Frequency, Davis-to-Christchurch Link by Month, Summer 1993/1994 (12-dB Minimum Measured SINAD).

Exceedance (90%, 50%, and 10%) for Best Frequency, Davis-to-McMurdo Link by Month Winter 1993 (12-dB Minimum Measured SINAD)

Exceedance (90%, 50%, and 10%) for Best Frequency, Davis-to-McMurdo Link bv Month Sorine 1993 (12-dB Minimum Measured SINAD)


Figure Page

132 Exceedance (90%, 50%, and 10%) for Best Frequency, Davis-to-McMurdo Link by Month, Summer 1993/1994 (12-dB Minimum Measured SINAD) 77


134 Exceedance (90%, 50%, and 10%) for Best Frequency, Davis-to-Salisbury Link by Month, Spring 1993 (12-dB Minimum Measured SINAD) 78

13 5 Exceedance (90%, 50%, and 10%) for Best Frequency, Davis-to-Salisbury Link by Month, Summer 1993/1994 (12-dB Minimum Measured SINAD) 78

136 Exceedance (90%, 50%, and 10%) for Best Frequency, McMurdo-to-Davis Link by Month, Summer 1992/1993 (12-dB Minimum Measured SINAD) 79




140 Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to-Christchurch Link by Month, Summer 1993/1994 (12-dB Minimum Measured SINAD) 81




144 Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to-Davis Link by Month, Fall 1993 (12-dB Minimum Measured SINAD) 83

145 Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to-Davis Link by Month, Winter 1993 (12-dB Minimum Measured SINAD) 83


147 Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to-Davis Link by Month, Summer 1993/1994(12-dB Minimum Measured SINAD) 84

148 Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to-McMurdo Link by Month, Summer 1992/1993 (12-dB Minimum Measured SINAD) 85

Vlll


Figure Pa8e

149 Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to-McMurdo Link by Month, Fall 1993 (12-dB Minimum Measured SINAD) 85

150 Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to-McMurdo Link by Month, Winter 1993 (12-dB Minimum Measured SINAD) 86

151 Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to-McMurdo Link by Month, Spring 1993 (12-dB Minimum Measured SINAD) 86





156 Exceedance (90%, 50%, and 10%) for Best Frequency, Christchurch-to-McMurdo Link by Month, Spring 1993 (18-dB Minimum Measured SINAD) 89


158 Exceedance (90%, 50%, and 10%) for Best Frequency, Davis-to-McMurdo Link by Month, Winter 1993 (18-dB Minimum Measured SINAD) 90

159 Exceedance (90%, 50%, and 10%) for Best Frequency, Davis-to-McMurdo Link by Month, Spring 1993 (18-dB Minimum Measured SINAD) 90

160 Exceedance (90%, 50%, and 10%) for Best Frequency, Davis-to-McMurdo Link by Month, Summer 1993/1994 (18-dB Minimum Measured SINAD)....... 91

161 Exceedance (90%, 50%, and 10%) for Best Frequency, Davis-to-Salisbury Link by Month, Spring 1993 (18-dB Minimum Measured SINAD)..... 91





IX


Figure page





170 Exceedance (90%, 50%, and 10%) for Best Frequency, Christchurch-to-Davis Link by Season, 1993 (6-dB Minimum Measured SINAD) 96

171 Exceedance (90%, 50%, and 10%) for Best Frequency, Christchurch-to-McMurdo Link by Season, 1993 (6-dB Minimum Measured SINAD) 96


173 Exceedance (90%, 50%, and 10%) for Best Frequency, Christchurch-to-Salisbury Link by Season, 1993 (6-dB Minimum Measured SINAD) 97


175 Exceedance (90%, 50%, and 10%) for Best Frequency, Davis-to-Christchurch Link by Season, 1993 (6-dB Minimum Measured SINAD) 98

176 Exceedance (90%, 50%, and 10%) for Best Frequency, Davis-to-McMurdo Link by Season, 1993 (6-dB Minimum Measured SINAD) 99

177 Exceedance (90%, 50%, and 10%) for Best Frequency, Davis-to-Salisbury Link by Season, 1992 (6-dB Minimum Measured SINAD) 99


179 Exceedance (90%, 50%, and 10%) for Best Frequency, McMurdo-to-Christchurch Link by Season, 1993 (6-dB Minimum Measured SINAD) 100

180 Exceedance (90%, 50%, and 10%) for Best Frequency, McMurdo-to-Davis Link by Season, 1992 (6-dB Minimum Measured SINAD) 101


182 Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to-Christchurch Link by Season, 1993 (6-dB Minimum Measured SINAD) 102


Figure Page


184 Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to-Davis Link by Season, 1992 (6-dB Minimum Measured SINAD) 103


186 Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to-McMurdo Link by Season, 1992 (6-dB Minimum Measured SINAD) 104



189 Exceedance (90%, 50%, and 10%) for Best Frequency, Christchurch-to-Davis Link by Season, 1993 (12-dB Minimum Measured SINAD) 105





194 Exceedance (90%, 50%, and 10%) for Best Frequency, Davis-to-Salisbury Link by Season, 1992 (12-dB Minimum Measured SFNAD) 108




198 Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to-Christchurch Link by Season, 1993 (12-dB Minimum Measured SFNAD) 110

199 Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to-Christchurch Link by Season, 1994 (12-dB Minimum Measured SFNAD) 110

XI


Figure page

200 Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to-Davis Link by Season, 1992 (12-dB Minimum Measured SINAD) , 111


















Figure Page



219 Circuit Availability by Season, Christchurch to Davis, 1993-1994 121 220 Circuit Availability by Season, Christchurch to McMurdo, 1993-1994 122 221 Circuit Availability by Season, Christchurch to Salisbury, 1993-1994 123 222 Circuit Availability by Season, Davis to Christchurch, 1993-1994 124 223 Circuit Availability by Season, Davis to McMurdo, 1993-1994 125 224 Circuit Availability by Season, Davis to Salisbury, 1993-1994 126 225 Circuit Availability by Season, Salisbury to Christchurch, 1993-1994 127 226 Circuit Availability by Season, Salisbury to McMurdo, 1993-1994 128 227 Circuit Availability by Season, Salisbury to Davis, 1993-1994 129 228 Link Symmetry for All Links, 1993-1994.... 130 229 Link Symmetry, Salisbury to McMurdo, 0000-0400 UT 130 230 Link Symmetry, Salisbury to McMurdo, 0400-0800 UT 131 231 Link Symmetry, Salisbury to McMurdo, 0800-1200 UT 131 232 Link Symmetry, Salisbury to McMurdo, 1200-1600 UT 132 233 Link Symmetry, Salisbury to McMurdo, 1600-2000 UT 132 234 Link Symmetry, Salisbury to McMurdo, 2000-2400 UT 133 235 Link Symmetry, Salisbury to Christchurch, 0000-0400 UT 133 236 Link Symmetry, Salisbury to Christchurch, 0400-0800 UT 134 237 Link Symmetry, Salisbury to Christchurch, 0800-1200 UT. 134 238 Link Symmetry, Salisbury to Christchurch, 1200-1600 UT 135 239 Link Symmetry, Salisbury to Christchurch, 1600-2000 UT 135 240 Link Symmetry, Salisbury to Christchurch, 2000-2400 UT 136 241 Link Symmetry, Davis to McMurdo, 0000-0400 UT 136 242 Link Symmetry, Davis to McMurdo, 0400-0800 UT 137 243 Link Symmetry, Davis to McMurdo, 0800-1200 UT 137 244 Link Symmetry, Davis to McMurdo, 1600-2000 UT 138 245 Link Symmetry, Davis to McMurdo, 2000-2400 UT 138 246 Link Symmetry, Salisbury to Davis, 0000-0400 UT 139 247 Link Symmetry, Salisbury to Davis, 0400-0800 UT 139 248 Link Symmetry, Salisburyto Davis, 0800-1200 UT 140

Xlll


Figure Page

249 Link Symmetry, Salisbury to Davis, 1200-1600 UT 140 250 Link Symmetry, Salisbury to Davis, 1600-2000 UT 141 251 Link Symmetry, Salisbury to Davis, 2000-2400 UT 141 252 Received SINAD vs. Channel Score 142 253 Measured SINAD vs. Channel Score 142

XIV

SEASONAL PERFORMANCE OF A HIGH-FREQUENCY/AUTOMATIC LINK ESTABLISHMENT (HF/ALE) RADIO NETWORK

OPERATING AT MID TO HIGH LATITUDES IN THE SOUTHERN HEMISPHERE

(VOLUME 2—DATA PLOTS)

INTRODUCTION

A high-frequency/automatic link establishment (HF/ALE) network was set up between four sites located in Christchurch in New Zealand, Salisbury in Australia, and McMurdo and Davis Station in Antarctica. The primary goal was to study the potential benefits of introducing an automatic frequency management system into the daily operations of the HF communications links involving mid- to high-latitude propagation paths. Ten frequencies between 5 and 26 MHz were evaluated and the data were plotted versus time-of-day, season, and predicted results.

This volume (Volume 2) contains the complete set of data plots generated during the quality analysis phase of the operation (figures 1 through 253). Volume 1 (TR 11,106-1) contains the background, site descriptions, equipment and experiment design information, and conclusions. (Table 1 presents a summarization of the data plots as referenced to volume 1.)

Table 1. List of Data Plots and Referenced Volume I Material

Reference to Section of Vol. 1

Analysis or Comparison Figure

No.

9.2.1 Percent channel availability by season 1-9

9.2.2 Percent channel and link availability by season 10-25

9.2.3 Percent channel availability and SNR by season 26-58

9.2.4 Number of usable frequencies for each link attempt 59-74

9.2.5 Percent channel availability of frequency group by season 75-83

9.2.6 Highest observed frequency with SNR > 6 dB by month 84-124



9.2.7 Highest observed frequency with SNR > 6 dB by season 170-188



9.2.8 Seasonal link availability grouped by frequency band 219-227

9.2.10 Link symmetry (measured vs. received. SINAD) for all links 228

9.2.10 Link symmetry (measured vs. received. SINAD) for all links for 4-hour time bins 229-251

9.2.11 SINAD vs. channel score 252-253

CHRISTCHURCH TO DAVIS 1993

NO DATA AVAILABLE

2 90 g 80 8 70 t 60 5 50 S 40 3 30 I 20-.

0

WINTER

-i 1 1 1 1 1 4 8 12 16 20 24

HOUR BIN

NO DATA AVAILABLE -

NO DATA AVAILABLE

□ % CHANNEL AVALABILITY

1994

~ NO DATA AVAILABLE - - NO DATA AVAILABLE -

- NO DATA AVAILABLE - - NO DATA AVAILABLE -

Niai0-GA-9S(L)0524U.M66A

Figure 1. Circuit Availability by Season, Christchurch to Davis, 1993 and 1994

CHRISTCHURCH TO MCMURDO 1223

NO DATA AVAILABLE

_ 100T

2 «0 g «0

|S 1 50 m 40.. 2 30 I 20

WINTER

24

HOUR BIN

- NO DATA AVAILABLE ~

-100 2 90 g 80

»S 1 50 S 40 2 30

S »

SPRING

12

HOUR BIN

D % CHANNEL AVALABIUTY

1994

NO DATA AVAILABLE

70 60 SO.. 40 30 20 io|- 0

WINTER

HOUR BIN

NO DA TA AVAILABLE -

- NO DATA AVAILABLE

N1810-GA-95(L)0524U.M67A

Figure 2. Circuit Availability by Season, Christchurch to McMurdo, 1993 and 1994

CHRISTCHURCH TO SALISBURY 1993

- NO DATA AVAILABLE

100T

90.. BO.. 70.. 60.. 50.. 40-. 30 20 10 0

WINTER

24

- NO DATA AVAILABLE -

100T

90 SO 70 60.. 50 40 30. 20 10 0

SPRING

20

HOUR BIN

D % CHANNEL AVALABIUTY

1994

- NO DATA AVAILABLE

£ 90-. g 80 8 70 >r 60 § 50 | 40.. a 30-. i zo # 10+

WINTER

HOUR BIN


=■100 2' 90 g 80 8 70 r 60 5 50 S 40 1 3° I 20 # 10

0

SPRING

HOUR BIN

N1810-GA-95(L)0524U.M68A

Figure 3. Circuit Availability by Season, Christchurch to Salisbury, 1993 and 1994

DAVIS TO CHRISTCHURCH

1232.

NO DATA AVAILABLE -

-100 5 90 + g 80 8 70 r 60 § 50. 5 40 " 30 * 20 ; io

0

WINTER

NO DATA AVAILABLE -

100- r SPRING 90 80 70 60 50. 40- 30 20 10 0. 1 1 _i 1 1 1

HOUR BIN

□ % CHANNEL AVALABIUTY

1994



N1810-GA-95(L)0524U.M69A

Figure 4. Circuit Availability by Season, Davis to Christchurch, 1993 and 1994

DAVIS TO MCMURDO 1993

- NO DATA AVAILABLE - NO DATA AVAILABLE -

S 100 T S 90.. g 80..

70.. ,. 60-. I SO.. " 40..

30.. 20. 10..

WINTER SPRING

HOUR BIN

8 12 16

HOUR BIN

20

1994


S100T S 90 g 80.. S 70 r 60 5 50 S 40

SUMMER

HOUR BIN


- NO DATA AVAILABLE - NO DATA AVAILABLE X <f <

N1810-GA-95(L)0524U.M70A

Figure 5. Circuit Availability by Season, Davis to McMurdo, 1993 and 1994

DAVIS TO SALISBURY im

NO DATA AVAILABLE

2 90. g 80.. 8 70

\ 50-. S 40-. 3 30.. | 20.. * 10..

0

FALL

HOUR BIN

20 24

s 100T 2 »0.. g 80.. 8 70.. r 60-. I so..

40.. 30 20 10..

WINTER = 100 2 90. g 80

SPRING

12 16

HOUR BIN HOUR BIN

24

1994


. 100 i go

80 70

' 60 50 40 30.. 20 10

0

SUMMER

8 12 16

HOUR BIN

24

NO DATA AVAILABLE -

- NO DATA AVAILABLE - NO DATA AVAILABLE X

N1810-GA-95(L)0524U.M71A

Figure 6. Circuit Availability by Season, Davis to Salisbury, 1993 and 1994

SALISBURY TO CHRISTCHURCH im.

NO DATA AVAILABLE

iooT 90-. 80.. 70-. 60-. 50 40 30 20 10 0

ISM

WINTER

NO DATA AVAILABLE

100 90 80 70 60 50.. 40 30 20 10 0

SPRING

HOUR BIN

□ % CHANNEL AVALABIL1TY

SUMMER

HOUR BIN


SPRING

HOUR BIN

N1810-GA-95(L)0524U.M72A

Figure 7. Circuit Availability by Season, Salisbury to Christchurch, 1993 and 1994

SALISBURY TO DAVIS im

NO DATA AVAILABLE -

2 90 s *>■

r 60 5 50 m 40 2 30..

I » J 10

0

FALL

8 12 16

HOUR BIN

-100 £ 90 g 80

* 2 JT 60 | 50 m 40 d 30 | 20 ; io

0

WINTER SPRING

12

HOUR BIN HOUR BIN

1994


SUMMER

8 12 16

HOUR BIN

NO DATA AVAILABLE -

NO DATA AVAILABLE - - NO DATA AVAILABLE - s

N1810-GA-95(L)0524U.M73A

Figure 8. Circuit Availability by Season, Salisbury to Davis, 1993 and 1994

SALISBURY TO MCMURDO 1232

NO DATA AVAILABLE -

S100, ä 90.. g 80 8 70 r 6o 5 50 5 40 3 30.. > 20 * 10

0

1994 s-100 ,!! 90 ■

S-100 £' 90

8 70 r 60

50 40 30 20 10 + 0

WINTER

HOUR BIN

s-100 2 90 S 8 70

60-. 50-. 40.. 30. 20- r 10-. 0

FALL

12 16

HOUR BIN

100- SPRING 90-

70 J 60 50 40 30. 20 10 0 ^ 1 1 1 1

□ % CHANNEL AVALABILITY

SUMMER

12 16

HOUR BIN

WINTER

HOUR BIN

. 100 90 80 70 60 50 40 30.. 20. 10 0

FALL

12 16

HOUR BIN

100 90 80 70 604 50 40 30 20 10.. 0

SPRING

4 8 12 16

HOUR BIN

N1810-GA-95(L)0524U.M74A

Figure 9. Circuit Availability by Season, Salisbury to McMurdo, 1993 and 1994

10

CHRISTCHURCH TO DAVIS BEST OF 10 FREQUENCIES 1993

■ HO DATA AVAIABLE . ■ NO DATA AVAILABLE -

0 % CIRCUIT AVAILABILITY

WINTER

NO DATA AVALABLE ■

N1S10-GA-!S(L)dS4UJI1

Figure 10. Link Availability and Circuit Availability by Season, Christchurch to Davis, 1993

CHRISTCHURCH TO McMURDO BEST OF 10 FREQUENCIES 1993

■ NO DATA AVALABLE - - NO DATA AVAILABLE -

I AVAILABILITY

WINTER SPRING

4 8 12 16

HOUR BIN

N1810-GA45(L)03MUJU2

Figure 11. Link Availability and Circuit Availability by Season, Christchurch to McMurdo, 1993

11

CHRISTCHURCH TO McMURDO BEST OF 10 FREQUENCIES 1994

■ NO DATA AVAILABLE ■ - MO DATA AVAILABLE -

1 AVAILABILITY I

WINTER

HOUR BIN

■ NO DATA AVAILABLE -

H1810-GA->5{L)0524UM3

Figure 12. Link A vailability and Circuit A vailability by Season, Christchurch to McMurdo, 1994

CHRISTCHURCH TO SALISBURY BEST OF 10 FREQUENCIES 1993

■ NO DATA AVAILABLE - ■ NO DATA AVAILABLE -

AVAILABILITY

SPRING

HOUR BIN

N1S1IM3A4SfL)0524UJU

Figure 13. Link Availability and Circuit Availability by Season, Christchurch to Salisbury, 1993

12

Mtt1«-GA-»5(L>«24U*I5

Figure 14. Link Availability and Circuit Availability by Season, Christchurch to Salisbury, 1994

DAVIS TO CHRISTCHURCH BEST OF 10 FREQUENCIES 1993

■ MO DATA AVAILABLE ■ ■ NO DATA AVAILABLE ■

I AVAILABILITY

WINTER

HOUR BIN

SPRING

HOUR BIN

H1B1»£A-H1L)M»UMC

Figure 15. Link Availability and Circuit Availability by Season, Davis to Christchurch, 1993

13

DAVIS TO McMURDO BEST OF 10 FREQUENCIES 1993

■ NO DATA AVAILABLE - ■ HO DATA AVAILABLE -

D AVAILABILITY

100 90.. 80 70 60 50 40 30 20 10 0

WINTER

HOUR BIN

■ITY F

100-r 90 SO 70.. 60 50.. 40 30 20 10. 0

SPRING

HOUR BIN

N181«^3A.|S4lj«S24U.M7

Figure 16. Link Availability and Circuit Availability by Season, Davis to McMurdo, 1993

DAVIS TO McMURDO BEST OF 10 FREQUENCIES 1994

SUMMER

■ MO DATA AVAILABLE -

u AVAILABILITY I

- NO DATA AVAILABLE - ■ NO DATA AVAILABLE •

N1M»-GA-tS(L)0324UJH

Figure 17. Link Availability and Circuit Availability by Season, Davis to McMurdo, 1994

14

DAVIS TO SALISBURY BEST OF 10 FREQUENCIES 1993

NO DATA AVAILABLE -

FALL

I AVAILABILITY

WINTER

HOUR BIN

HOUR BIN

SPRING

H1M*-GA-K(L)IS24U.IM

Figure 18. Link Availability and Circuit Availability by Season, Davis to Salisbury, 1993

DAVIS TO SALISBURY BEST OF 10 FREQUENCIES 1994

SUMMER

HOUR BIN

- NO DATA AVAILABLE ■

I AVAILABILITY

■ NO DATA AVAILABLE - - NO DATA AVAILABLE -

N1tW-G/lt3(L3«24U.M1l>

Figure 19. Link Availability and Circuit Availability by Season, Davis to Salisbury, 1994

15

SALISBURY TO CHRISTCHURCH BEST OF 10 FREQUENCIES 1993

HOUn AVAILABLE - - NO DATA AVAILABLE -

AVAILABILITY I

HOUR BIN HOUR BIN

N1810-GA-9S|L)0524U.M11

Figure 20. Link Availability and Circuit Availability by Season, Salisbury to Christchurch, 1993

100 T

90 80 70 SO 50 m 30 20 10 0

SALISBURY TO CHRISTCHURCH BEST OF 10 FREQUENCIES 1994

SUMMER

HOUR BIN

HO DATA AVAILABLE -

AVAILABILITY

SPRING

N1M0-GM5(L.)0324U.M12

Figure 21. Link Availability and Circuit Availability by Season, Salisbury to Christchurch, 1994

16

SALISBURY TO DAVIS BEST OF 10 FREQUENCIES 1993


FALL

I AVAILABILITY

WINTER SPRING

N1B10-GA-95(L)Q524U.M13

Figure 22. Link Availability and Circuit Availability by Season, Salisbury to Davis, 1993

SALISBURY TO DAVIS BEST OF 10 FREQUENCIES 1994

100- SUMMER 90

m 80.

Al «>■

" ?■ i ■ ""--■ - NO DATA AVAILABLE -

» 30 S! 20.

10

) 4 8 12 16 20 24

HOUR BIN r-i % CIRCUIT 1

- MO DATA AVAILABLE - - NO DATA AVAILABLE -

N181&-GA-*9fL)0524U.M14

Figure 23. Link Availability and Circuit Availability by Season, Salisbury to Davis, 1994

17

SALISBURY TO McMURDO BEST OF 10 FREQUENCIES 1993

■ HO DATA AVAILABLE -

FALL

I AVAILABILITY

100- WINTER 90

m BO ■o 70l Al 60 01 sn

DC 40 (A 30. S5 20.

10. 0. I 1 1 1 ™ 1

HOUR BIN

HOUR BIN

100 90 80 70

SPRING

so 40 30 20.. 10..

HOUR BIN

N1M0-GA-99<L)0S24UM15

Figure 24. Link Availability and Circuit Availability by Season, Salisbury to McMurdo, 1993

SALISBURY TO McMURDO BEST OF 10 FREQUENCIES 1994

100 - SUMMER 90

a so

- 21 —m^^f Al 60

• 50 N. " * «■ CO 30 6* 20

10. 0 1 1 1 1— —I

WINTER

0 % CIRCUIT AVAILABILITY

FALL

100 SPRING 90

70. SO1

SO 40 30 20 10

0 I 1 1 1 1 1

N1t1O-GA-05(L)OS24U.mi

Figure 25. Link Availability and Circuit Availability by Season, Salisbury to McMurdo, 1994

18

SALISBURY TO McMURDO -- FALL 1993»

FREQUENCY: 5.030MHz

8 11 II ID

FREQUENCY: 6.767 MHz FREQUENCY: 9.110MHz

a 12 i>

FREQUENCY 13.490 MHz FREQUENCY: 15.0884 MHz FREQUENCY: 18.610 MHz FREQUENCY: 20.439 MHz

FREQUENCY: 22.950 MHz FREQUENCY: 25.110MHz "-"' SNR>OdB ~*~ SNR > 6 dB ~*~ SNR > 12 dB ~*~ SNR>18dB

SNR > 24 dB ~"*~ SNR =30 dB pj »CIRCUIT

AVAILABILITY

N1810-GA-96(L)0524U.M33

Figure 26. Percent Availability and SNR by Frequency, Salisbury to McMurdo, Fall 1993

SALISBURY TO McMURDO -- WINTER 1993 -

FREQUENCY: 5.030MHz FREQUENCY: 6.757MHz FREQUENCY: 9.110MHz FREQUENCY: 11.508 MHz

JZZ 8 la 1« M

FREQUENCY 13.490 MHz FREQUENCY: 15.0884 MHz

I "\ J B 12 18 20 *

FREQUENCY: 18.610 MHz FREQUENCY: 20.439 MHz

FREQUENCY: 22.950 MHz

& «.

8 12 18 20

FREQUENCY: 25.110MHz

i«.

« BO

8 12 18 30 24

SNR>0dB SNR>6dB SNR > 12 dB SNR>18dB SNR > 24 dB SNR -30 dB

N1810-GA-96(L)0524U.MM

Figure 27. Percent Availability and SNR by Frequency, Salisbury to McMurdo, Winter 1993

19

SALISBURY TO McMURDO - SPRING 1993 -

FREQUENCY: 5.030MHz FREQUENCY: 6.767MHz

* so

FREQUENCY: 9.110MHz FREQUENCY: 11.SOS MHz

FREQUENCY: 13.4S0 MHz FREQUENCY: 15.0SS4 MHz FREQUENCY: 13.610MHz

!«K.

FREQUENCY: 20 439MHz

X


1- * 20


I« * 30

SNR>0dB ~*~ SNR>6dB ~*~ SNR > 12 dB "*" SNR>1«dB ^~ SNR>24dB ~*~ SNR-30dB □ %CRCUIT

AVAILABILITY

N181M;A-95<L)0524UM36

Figure 28. Percent Availability and SNR by Frequency, Salisbury to McMurdo, Spring 1993

SALISBURY TO McMURDO -- SUMMER 1993 -

FREQUENCY: 5.030MHz FREQUENCY: 6.767MHz FREQUENCY: 9.110MHz FREQUENCY: 11.50S MHz

Jr-

FREQUENCY: 13.490 MHz FREQUENCY : 15.0SS4 MHz FREQUENCY: 16.610 MHz FREQUENCY: 20.439 MHz

" «o

ä

S 13 IB 30 34


I« X SO

• 12 IB 20


8 12 1» 20 24

SHR>0dB SNR > 6 dB SNR>12dB 3NR>18dB SNR>24<S SNR «30«

N1810-GA-S5(L)0624U.III38

Figure 29. Percent Availability and SNR by Frequency, Salisbury to McMurdo, Summer 1993

20

SALISBURY TO McMURDO -- FALL 1994-


la if 20

FREQUENCY; 6.767MHz

I «-

^fe*_ a 12 It 20 24

FREQUENCY: 9.110 MHr FREQUENCY 11.508 MHz


^

FREQUENCY: 18.610 MHr

^ »=3&^J



I"" )t 30

■ ia 1« ao 24


12 IB 20

SNR>0dB

SNR > 8 dB

SNR > 12 dB

SNR > 1» dB

SNR > 24 dB

SNR -30 dB

% CIRCUIT AVAILABILITY

N181<W5A-«(L)0524U.M37

Figure 30. Percent Availability and SNR by Frequency, Salisbury to McMurdo, Fall 1994

SALISBURY TO McMURDO - WINTER 1994 -

FREQUENCY: 5.030MHz

4 B 12


:U^w 1 12 IS 20

FREQUENCY: 9.110MHz

^^=^=^--^^^


^—ggrf#- n K

FREQUENCY: 13.490 MHz FREQUENCY: 15.0884 MHz FREQUENCY: 18.610 MHz FREQUENCY: 20.439 MHz

S s * 20

0 4 S 12


IOC-

* 20


8 12 IS 20

SNR>0dB

SNR > 6 dB

SNR > 12 dB

SNR > 18 dB

SNR > 24 dB

SNR -30 dB

N1S10-GA-96<L)0524U.M38

Figure 31. Percent Availability and SNR by Frequency, Salisbury to McMurdo, Winter 1994

21

SALISBURY TO McMURDO -- SPRING 1994 -

N1810-GA-»6<L)0524U.KU

Figure 32. Percent Availability and SNR by Frequency, Salisbury to McMurdo, Spring 1994

SALISBURY TO DAVIS - FALL 1993-

FREQUENCY: 6.767 MHz FREQUENCY: 9.110MHz FREQUENCY: 11.503 MHz

FREQUENCY: 13.490 MHz FREQUENCY: 15.0884 MHz FREQUENCY: 18.610 MHz FREQUENCY: 20.439MHz

,00T

4 9 12 IS 20 24

FREQUENCY: 22.950 MHz FREQUENCY: 25.110MHz SNR>0d8

SNR>6dB

SNR > 12 dB

SNR>1BdB

SNR > 24 dB

SNR = 30 dB

N1MIH1A.«M1MM1|IM»

Figure 33. Percent Availability and SNR by Frequency, Salisbury to Davis, Fall 1993

22

SALISBURY TO DAVIS -- WINTER 1993 -

FREQUENC Y: 5.030 MHz FREQUENCY: 6.767MHz FREQUENCY: 9.110MHz FREQUENCY: 11.508 MHz


-^


ii<^ ju- ts 20 24


a 12 10 20

SNR>0dB -*- SNR>6dB -♦- 8NR> 12 dB -*-■ SNR> 1ft dB -*- SNR > 24 dB -*» SNR* 30 dB

D % CHANNEL AVAILABILITY

U1.1Q^..oaiVKÎU.1

Figure 34. Percent Availability and SNR by Frequency, Salisbury to Davis, Winter 1993

SALISBURY TO DAVIS -- SPRING 1993 --


is ao 24



B 12 IS 20 24


S 12 IS 20 2*

SNR>0dB

SNR > 6 dB

SNR > 12 dB

SNR > 18 dB

SNR > 24 dB

SNR = 30 dB

mmn-n»-q»nyiM4ilim

Figure 35. Percent Availability and SNR by Frequency, Salisbury to Davis, Spring 1993

23

SALISBURY TO DAVIS - SUMMER 1994 -


10ar




lOOr


I 12 IS 20 24

" - 8NR>0dB -*- SNR > 6 dB ~*~ SNR > 12 dB "*" SNR> 1tdB ~*~ SNR> 24dB "^~ SNR»30dB I-, % CHANNEL U AVALABIUTY

N1810-GA-8S{L)0S24U.M43

Figure 36. Percent Availability and SNR by Frequency, Salisbury to Davis, Summer 1994

SALISBURY TO CHRISTCHURCH - FALL 1993 -

FREQUENCY: 5.030 MHz FREQUENCY: 6.767MHz FREQUENCY: 9.110MHz FREQUENCY: 11.508 MHz

FREQUENCY: 13.490 MHz FREQUENCY: 15.0884 MHz FREQUENCY: 18.610 MHz

IODT


FREQUENCY: 22.950MHz FREQUENCY: 25.110MHz - ... SNR>0dS

-*- SNR > 6 dB —¥~ SNR > 12 dB —M- SNR > 18 dB -*- SNR > 24 dB

~k~ SNR-30 dB

o % CHANNEL AVA1LA8UTY

NI810-OA-»5<L)O624U.M44

Figure 37. Percent Availability and SNR by Frequency, Salisbury to Christchurch, Fall 1993

24

SALISBURY TO CHRISTCHURCH - SPRING 1993 ■-


n d^M-r#r^'Vr--.B i

S 1! IS 20 24

FREQUENCY: 9.110MHz

8 13 1« 30 34


FREQUENCY: 13.490 MHz FREQUENCY: 15.08S4 MHz FREQUENCY: 18.610 MHz

oi a l~~ 3 S<^==$=t 16 20 34



il~-if a- -*=J 1« 30 24

FREQUENCY: 25.110MHz -■-■ SNR>0dB -*~ SNR > 8 dB —•" SNR > 12 dB -*- SNR > 18 dB -*- SNR > 24 dB -*- SNR-30dB

n % CHANNEL U AVAILABILITY

N1810-GA-95(L)0624U.M45

Figure 38. Percent Availability and SNR by Frequency, Salisbury to Christchurch, Spring 1993

SALISBURY TO CHRISTCHURCH « SUMMER 1994 --


,^b • 13 II

FREQUENCY: 6,767 MHz FREQUENCY: 9.110MHz FREQUENCY: 11.508 MHz


FREQUENCY: 22.950 MHz FREQUENCY: 25.110MHz ~'- SNR>0dB -*- 3NR>6dB -*- SNR>12dB -*- SNR > 18 dB "^- SNR > 24 dB ~*~ 3NR*30dB

I-T % CHANNEL Li AVAILABILITY

N1 B10-GA-«5(L)0524U.MM

Figure 39. Percent Availability and SNR by Frequency, Salisbury to Christchurch, Summer 1994

25

SALISBURY TO CHRISTCHURCH - WINTER 1994 -


iooT

S *° A


iooT

S BO

FREQUENCY: 9.110MHz

5 so Ai eo

l .


100j

5 to

1 «rA *s 0 4 • 12 IS 30 24

HOUR BIN

4 B 12 18 20 24

HOUR BIN

4 0 12 1« 20 24

HOUR BIN

0 4 » 12 18 20 24

HOUR BIN

FREQUENCY: 13.490 MHz FREQUENCY: 15.0884 MHz FREQUENCY: 18.610MHz FREQUENCY: 20.439 MHz

FREQUENCY: 22.950MHz FREQUENCY: 25.110 MHz SNR>0dB

SNR>6dB

SNR>12dS

N1810-GA-95(U0524U.M47

Figure 40. Percent Availability and SNR by Frequency, Salisbury to Christchurch, Winter 1994

SALISBURY TO CHRISTCHURCH ■- SPRING 1994 ~


1« 30 U


100

8 so

% K

i <o

FREQUENCY: 22.950 MHz FREQUENCY: 25,110 MHz

100 100-r

£0 to ID 00

"8 t0 3 «0

I" 1" * 10 X 20

0 4 B 11 1» W 24 0 4 B IS It 20 H

HOURBN HOUR BIN

- '-- SNR>0d8

""*♦" SNR>12cS "**" SNR > 18 dB ""*" SNR>24cS ~*~ SNR-30«

n %cHANNa •-1 AVAILABILITY

N181(MSAr9S(L)0624U .IMS

Figure 4L Percent Availability and SNR by Frequency, Salisbury to Christchurch, Spring 1994

26

CHRISTCHURCH TO SALISBURY - WINTER 1993 -

FREQUENCY: 5.030MHz

* 30,

o 4 a

FREQUENCY: 6.767MHz FREQUENCY: 9.110MHz FREQUENCY . 11.SOU MHz


it a ia is


I« 20 24



12 18 30 24

FREQUENCY: 25.110MHz 8NR>0dB

SNR > 6 dB

SNR > 12 dB

SNR > 18 dB

SNR > 24 dB

SNR-30 dB

M181(W5A-9S(L)0S24UMSa

Figure 42. Percent Availability and SNR by Frequency, Christchurch to Salisbury, Winter 1993

CHRISTCHURCH TO SALISBURY - SPRING 1993 --


■ 13 14 30 34

FREQUENCY: 9.110MHz FREQUENCY: 11.508 MHz

100T


100T

■^*- It 30 34


=ZS£


.£=*= 0 4 B 12 H 20 24


g « 1* 20 24

- SNR>0dB

-•- SNR > S dB

-♦- 3NR > 12 dB

"**- SHR > 18 dB

-*- SNR > 24 dB

~*~ SNR -30 dB

_, % CHANNEL U AVAILABILITY

N181 (WS A-95(L)0524U.M»

Figure 43. Percent Availability and SNR by Frequency, Christchurch to Salisbury, Spring 1993

27

CHRISTCHURCH TO SALISBURY - WINTER 1994 --

FREQUENCY: 5.030MHz FREQUENCY: 6.767MHz FREQUENCY: 3.110MHz

% 00

i " i2 ii a x


o4=4—^


FREQUENCY: 21950MHz FREQUENCY: 25.110MHz SNR>0dB

SNR > 6 dB

SNR > 12 dB

SNR > 18 dB

SNR > 24 dB

SNR>30dB

%CHANNEL AVAILABILITY

N1810-GA-95(L)0524U.M60

Figure 44. Percent Availability and SNR by Frequency, Christchurch to Salisbury, Winter 1994

CHRISTCHURCH TO SALISBURY ■■ SPRING 1994 -

FREQUENCY: 5.030MHz

% so-

* 20

13 10 20 M

FREQUENCY: 6.767MHz FREQUENCY: 9.110MHz FREQUENCY: 11.508 MHz


If 20 24

FREQUENCY: 15.0884 MHz FREQUENCY: 18.610 MHz FREQUENCY: 20.439MHz


100. 100r

m M

% »o

1» m BO

* *> # 20 tf 20 _

4 a 12 IB 20 34 4 S 12 1« 20 24

HOUR BIN HOUR BIN

SNR>0dB

SNR > 6 dB

SNR > 12 dB

SNR > 18 dB

SNR > 24 dB

SNR «30 dB

% CHANNEL AVAILABILITY

N181<W3 A-S5{L)0S24U.M61

Figure 45. Percent Availability and SNR by Frequency, Christchurch to Salisbury, Spring 1994

28

CHRISTCHURCH TO MCMURDO -- WINTER 1993 -

FREQUENCY: 5.030 MHz FREQUENCY: 6.767 MHr. FREQUENCY: 9.110MHz FREQUENCY: 11.508 MHz

FREQUENCY: 13.490 MHz FREQUENCY: 15.08S4 MHz FREQUENCY: 18.610 MHz FREQUENCY: 20.439MHz

FREQUENCY: 22.950MHz FREQUENCY: 25.110MHz SNR>0dB SNR>6dB SNR>12dB SNR>18dB SNR>24dB SNR-30dB % CHANNEL AVAILABILITY

N181(M3A-95(L)0624U.M62

Figure 46. Percent Availability and SNR by Frequency, Christchurch to McMurdo, Winter 1993

CHRISTCHURCH TO MCMURDO -- SPRING 1993 -


ii^- i-siS-i 0 4 S 12 It 20 24




'"fes: so t 13 IB 30 M


ED 10.

% M

-sâgg- 4 • 12 19 W

' 3NR>0dB -*- SNR>6dB -•- SNR > 12 dB -**- SNR > 18 dB -ifi- SNR > 24 dB ~*~ SNR ■ 30 dB r-i % CHANNEL LJ AVAILABILITY

N1810-GA-06(L)0624U.M63

Figure 47. Percent Availability and SNR by Frequency, Christchurch to McMurdo, Spring 1993

29

CHRISTCHURCH TO MCMURDO » WINTER 1994 -

FREQUENCY: 5.030 MHz FREQUENCY: 6.767 MHz FREQUENCY: 9.110MHz FREQUENCY: 11.503MHz

FREQUENCY: 13.490MHz FREQUENCY: 15.0884 MHz FREQUENCY: 18.610 MHz FREQUENCY: 20.439MHz

10DT


100 100,

a, SO m 80

* 30 I " * 20

4 8 12 IB 10 34 0 4 8 12 IB 20 24

HOUR ON HOUR BW

->- SNR>0dB -+- SNR > 8 dB -*- SNR > 12 dB -*- SNR > 18 dB —*- SNR > 24 dB ~*~ SNR > 30 dB

D %CHANNEL AVAILABILITY

H1S1IKA-K(L|»24UJIU

Figure 48. Percent Availability and SNR by Frequency, Christchurch to McMurdo, Winter 1994

CHRISTCHURCH TO DAVIS - WINTER 1993 -




i B 12 IB 20 M

-'- SNR>0dB -*- SNR > 8 dB -•- SNR > 12 dB -**- SNR > 18 dB -*- SNR > 24 dB ~*~ SNR ■ 30 dB r-i »CHANNEL LJ AVAILABILITY

N1810-GA-95{L)0624U.M65

Figure 49. Percent Availability and SNR by Frequency, Christchurch to Davis, Winter 1993

30

DAVIS TO SALISBURY -- FALL 1993 --

FREQUENCY: 5.030MHz

1« ao M

FREQUENCY: 6.767MHz

,4V

FREQUENCY: 9.110MHz

tOOy



1« 20 H


12 is 20


100T

o 80

16 eo

12 10 20 24

SNR>0dB -•- 8NR>6dB -*- SNR > 12 dB ~«~ SNR > 18 dB -*- SNR > 24 dB -*- SNR-30 dB P-, % CHANNEL U AVAILABILITY

N18100 A-95(L)0624U.IU9

Figure 50. Percent Availability and SNR by Frequency, Davis to Salisbury, Fall 1993

DAVIS TO SALISBURY -- WINTER 1993 -

FREQUENCY: 5.030MHz

0 4 9 —ö B S *—


lOOy

FREQUENCY: 11.50S MHz


<&."i ■ Jl * Sf— ^


10ÖT


o4~—<£ « a s— 12 1< 20 24

SNR>0dB -♦- SNR>6dB —*- SNR > 12 dB -*~ SNR > 18 dB -*- SNR > 24 dB -*- SNR » 30 dB I-, % CHANNEL L-l AVAILABILITY

N1810-GA-»5(L)0524U.M50

Figure 51. Percent Availability and SNR by Frequency, Davis to Salisbury, Winter 1993

31

DAVIS TO SALISBURY - SPRING 1993 -

FREQUENCY: 5.030MHz

4 S 12 IS

FREQUENCY: 6.767MHz

IB 20 24


FREQUENCY: 13.490 MHz FREQUENCY: 15.0884 MHz FREQUENCY: 18.610 MHz

;^ 4^-Ä

4 B II 16 20



4 » 12 1« 30 24

SNR>0dB

SNR >6 dB

SNR > 12 dB

SNR > 18 dB

SNR > 24 dB

SNR* 30 dB

%CHANNEL AVAILABILITY

N1S1<H5A-95(L)Q524U.M51

Figure 52. Percent Availability and SNR by Frequency, Davis to Salisbury, Spring 1993

DAVIS TO SALISBURY -- SUMMER 1994 -



100T

S 12 1« 20 24

FREQUENCY: 22.950 MHz FREQUENCY: 25.110MHz SNR>0dB

SNR > 6 dB

SNR > 12 dB SNR > 18 dB

SNR > 24 dB

SNR ■ 30 dB


N1B10-GA-9S(L)0S24U.MS2

Figure 53. Percent Availability and SNR by Frequency, Davis to Salisbury, Summer 1994

32

DAVIS TO CHRISTCHURCH - WINTER 1993 --

FREQUENCY: 5,030 MHz FREQUENCY: 6.767MHz FREQUENCY: 9110 MHz FREQUENCY: 11.508 MHz


1IXW


12 It 20 24


FREQUENCY: 22950MHz FREQUENCY: 25.110MHz

100j

IS 20 24

-'^- SNR>0dB -*- SNR>etB -+- SNR>12dB -*- SNR>1«dB -*- SI«R>24dB '"*- SNR = 30 dB

p. % CHANNEL U AVAILABILITY

N1S10J5A-95(L)0524U.M5e

Figure 54. Percent Availability and SNR by Frequency, Davis to Christchurch, Winter 1993

DAVIS TO CHRISTCHURCH - SPRING 1993 -

FREQUENCY: 5.030 MHz FREQUENCY: 6.767MHz FREQUENCY: 9.110 MHz FREQUENCY: 11.506 MHz

0 4 ■ 12 IS 20 24


12 IS 20 24 HOURBR4


I«


D

SNR>0dB SNR>SdB SNR>12dB SNR > 19 dB SNR > 24 dB SNR "30 dB


H1«10-GA-95|L)0524U.M57

Figure 55. Percent Availability and SNR by Frequency, Davis to Christchurch, Spring 1993

33

DAVIS TO MCMURDO - WINTER 1993 -



0 4 0


100.

8 " X 80


100.

g % »


0 4 0 12 10 30 94 HOUflBH

FREQUENCY: 25.110 MHz SNR>0dB SNR>6dB SNR > 12 dB SNR > 19 dB SNR > 24 dB SNR =30 dB


Figure 56. Percent A vailability and SNR by Frequency, Davis to McMurdo, Winter 1993

DAVIS TO MCMURDO - SPRING 1993 -


FREQUENCY: 13.490 MHz FREQUENCY: 15.0884 MHz FREQUENCY: 18.610MHz FREQUENCY: 20.439MHz


o 4 0 12 10


4 0 12 10 2D 24

SNR> OdB SNR> 6 dB SNR> 12 dB SNR> 18 dB SNR> 24 dB SNR-30 dB


NiaiO-GA-9!(L)0524U.M54

Figure 57. Percent Availability and SNR by Frequency, Davis to McMurdo, Spring 1993

34

DAVIS TO MCMURDO - SUMMER 1994 -



0 4«

FREQUENCY: 15.0884 MHz FREQUENCY: 18.610 MHz FREQUENCY: 20.439MHz

100

9 oo


1001 tOOi

8 » • *> R * * 40

* 20 "~~*^~ ~~~^r^.— » 20

O 4 « 12 1« 20 2* 0 4 8 12 1« 3D 24

HOURBH HOUR BIN

□

SNR> OdB SNR>6dB SNR>12dB SNR>18dB SNR>24dB SNR-30dB % CHANNEL AVAILABILITY

N181 O£A-95(L)0624U.M55

Figure 58. Percent Availability and SNR by Frequency, Davis to McMurdo, Summer 1994

CHRISTCHURCH TO DAVIS NUMBER OF USEABLE FREQUENCIES PRESENT AT EACH LINK ATTEMPT (1993)

■ NO DATA AVAILABLE - - NO DATA AVAILABLE ■


-0 FREQUENCY ■ 1 FREQUENCY

■2 FREQUENCY ->3FREQUENCY

WINTER

HOUR BIN


N1810-GA-9S(L)0524U.M16

Figure 59. Number of Usable Frequencies at Each Link Attempt, Christchurch to Davis, 1993

35

CHRISTCHURCH TO McMURDO NUMBER OF USEABLE FREQUENCIES PRESENT AT EACH LINK ATTEMPT (1993)

- NO DATA AVAILABLE ■ ■ NO DATA AVAILABLE -

ri % CHANNEL LJ AVAILABILITY

-0 FREQUENCY ■ 1 FREQUENCY

HOUR BIN HOUR BIN

N1810-GA-95(L)0624U.M17

Figure 60. Number of Usable Frequencies at Each Link Attempt, Christchurch to McMurdo, 1993

CHRISTCHURCH TO McMURDO NUMBER OF USEABLE FREQUENCIES PRESENT AT EACH LINK ATTEMPT (1994)

- NO DATA AVAILABLE ■ ■ NO DATA AVAILABLE -

I-! % CHANNEL LJAVA«-ABILITY

■0 FREQUENCY -1 FREQUENCY •

■ 2 FREQUENCY ->3 FREQUENCY

WINTER

8 12 16 20 24

HOUR BIN


N1810-GA-9S(L)0524U.M18

Figure 61. Number of Usable Frequencies at Each Link Attempt, Christchurch to McMurdo, 1994

36

CHRISTCHURCH TO SALISBURY J NUMBER OF USEABLE FREQUENCIES PRESENT AT EACH LINK ATTEMPT (1993)

■ NO DATA AVAILABLE ■ ■ NO DATA AVAILABLE -

|-l% CHANNEL —•—0 FREQUENCY UAVA1_ABILITY —S-- 1 FREQUENCY

2 FREQUENCY > 3 FREQUENCY [

HOUR BIN

N18tftOA45(L)0524U.Mig

Figure 62. Number of Usable Frequencies at Each Link Attempt, Christchurch to Salisbury, 1993

CHRISTCHURCH TO SALISBURY J NUMBER OF USEABLE FREQUENCIES PRESENT AT EACH LINK ATTEMPT (1994)

■ NO DATA AVAILABLE ■ - NO DATA AVAILABLE -

ri % CHANNEL —•— 0 FREQUENCY —*— 2 FREQUENCY LJAVAIABILITY —H—1 FREQUENCY —+— > 3 FREQUENCY

WINTER

12 16 20 24

HOUR BIN

SPRING

HOUR BIN

N1810-GA-95(L)0524U.M20

Figure 63. Number of Usable Frequencies at Each Link Attempt, Christchurch to Salisbury, 1994

37

DAVIS TO CHRISTCHURCH NUMBER OF USEABLE FREQUENCIES PRESENT AT EACH UNK ATTEMPT (1993)

■ NO DATA AVAILABLE ■ ■ NO DATA AVAILABLE ■

1-1% CHANNEL "|LJAVALABILITY

■0 FREQUENCY -1 FREQUENCY

-2 FREQUENCY ■>3 FREQUENCY

WINTER

HOUR BIN

SPRING

HOUR BIN

NU1«SA-g5(L)0S24U.M21

Figure 64. Number of Usable Frequencies at Each Link Attempt, Davis to Christchurch, 1993

DAVIS TO McMURDO NUMBER OF USEABLE FREQUENCIES PRESENT AT EACH LINK ATTEMPT (1993)



-0 FREQUENCY - 1 FREQUENCY '

- 2 FREQUENCY - > 3 FREQUENCY

WINTER

HOUR BIN

SPRING

HOUR BIN

N1810-GA4S(L)0524U.M22

Figure 65. Number of Usable Frequencies at Each Link Attempt, Davis to McMurdo, 1993

38

DAVIS TO McMURDO NUMBER OF USEABLE FREQUENCIES PRESENT AT EACH UNK ATTEMPT (1994)

SUMMER

HOUR BIN

■ NO DATA AVAILABLE ■

|-| * CHANNEL LJAVAUkBILnY

-0 FREQUENCY ' -1 FREQUENCY '

-2 FREQUENCY ->3 FREQUENCY

- NO DATA AVAILABLE ■ ■ NO DATA AVAILABLE ■

N1S10-GA-95(L)0524U.M23

Figure 66. Number of Usable Frequencies at Each Link Attempt, Davis to McMurdo, 1994

DAVIS TO SALISBURY NUMBER OF USEABLE FREQUENCIES PRESENT AT EACH UNK ATTEMPT (1993)


FALL

|-| % CHANNEL LJAVALABILIIY

0 FREQUENCY ' 1 FREQUENCY '

- 2 FREQUENCY - > 3 FREQUENCY

WINTER

8 12 16

HOUR BIN

SPRING

HOUR BIN

N1B10-GA-g5(L)06»U.M24

Figure 67. Number of Usable Frequencies at Each Link Attempt, Davis to Salisbury, 1993

39

DAVIS TO SALISBURY NUMBER OF USEABLE FREQUENCIES PRESENT AT EACH UNK ATTEMPT (1994)

SUMMER

HOUR BIN


(-1% CHANNEL LJAVALABILirY

■0 FREQUENCY -1 FREQUENCY

■ 2 FREQUENCY ■>3 FREQUENCY

• NO DATA AVAILABLE ■ - NO DATA AVAILABLE -

N1«1(M3A-95(L)0S24U.M2S

Figure 68. Number of Usable Frequencies at Each Link Attempt, Davis to Salisbury, 1994

SALISBURY TO CHRISTCHURCH NUMBER OF USEABLE FREQUENCIES PRESENT AT EACH LINK ATTEMPT (1993)

- NO DATA AVAILABLE ■ - NO DATA AVAILABLE ■

|-|% CHANNEL • 0 FREQUENCY —•— 2 FREQUENCY '-'AVALABILHY —B— 1 FREQUENCY —»—> 3 FREQUENCY t

HOUR BIN

12 16

HOUR BIN

Figure 69. Number of Usable Frequencies at Each Link Attempt, Salisbury to Christchurch, 1993

40

SALISBURY TO CHRISTCHURCH NUMBER OF USEABLE FREQUENCIES PRESENT AT EACH LINK ATTEMPT (1994)

SUMMER

NO DATA AVAILABLE ■

8 12 16

HOUR BIN HOUR BIN

N1810-GA-9S(L)0524U.M27

Figure 70. Number of Usable Frequencies at Each Link Attempt, Salisbury to Christchurch, 1994

SALISBURY TO DAVIS NUMBER OF USEABLE FREQUENCIES PRESENT AT EACH LINK ATTEMPT (1993)


FALL

|-| % CHANNEL LJAVALABILirY

■^—0 FREQUENCY ' *- 1 FREQUENCY ■


WINTER

8 12 16 20 24

HOUR BIN

HOUR BIN

SPRING

HOUR BIN

N1B1IU>A4S(L)0524U.M2B

Figure 71. Number of Usable Frequencies at Each Link Attempt, Salisbury to Davis, 1993

41

SALISBURY TO DAVIS NUMBER OF USEABLE FREQUENCIES PRESENT AT EACH LINK ATTEMPT (1994)

SUMMER

HOUR BIN

• NO DATA AVAILABLE ■

|-| % CHANNEL LJ AVAlABlLrTY

0 FREQUENCY 1 FREQUENCY <



N1810-GA45(L)0524U.M29

Figure 72. Number of Usable Frequencies at Each Link Attempt, Salisbury to Davis, 1994

SALISBURY TO McMURDO NUMBER OF USEABLE FREQUENCIES PRESENT AT EACH LINK ATTEMPT (1993)


FALL

n% CHANNEL LJAVALABILITY

-0 FREQUENCY -1 FREQUENCY '

-2 FREQUENCY ■>3 FREQUENCY

WINTER

8 12 16 20

HOUR BIN

12 16 20

HOUR BIN

SPRING

N1810-GA45(L)0524U.M30

8 12 16 20 24

HOUR BIN

Figure 73. Number of Usable Frequencies at Each Link Attempt, Salisbury to McMurdo, 1993

42

SALISBURY TO McMURDO NUMBER OF USEABLE FREQUENCIES PRESENT AT EACH LINK ATTEMPT (1994)

SUMMER FALL

8 12 16

HOUR BIN HOUR BIN

N1B10-GA-95(L)O524U.M31

Figure 74. Number of Usable Frequencies at Each Link Attempt, Salisbury to McMurdo, 1994

43

CHRISTCHURCH TO DAVIS im

NO DATA AVAILABLE

WINTER

NO DATA AVAILABLE

NO DATA AVAILABLE -

■ NO FREQ AVAIL. ■ % OF 5-9 MHz AVAIL.

% OF 11-15 MHz AVAIL % OF 18-25 MHz AVAIL

1994



N1810-GA-95(L)0524U.M66

Figure 75. Percent Availability of Each Frequency Group by Season, Christchurch to Davis

44


NO DATA AVAILABLE - NO DATA AVAILABLE

WINTER SPRING

12 16 HOUR BIN

12 16 20 24

HOUR BIN

NO FREQ AVAIL -A- % OF 11-15 MHz AVAIL % OF 5-9 MHz AVAIL -#-- % OF 18-25 MHz AVAIL

1994

- NO DATA AVAILABLE

WINTER



N1810-GA-95(L)0524U.M67

Figure 76. Percent Availability of Each Frequency Group by Season, Christchurch to McMurdo

45

CHRISTCHURCH TO SALISBURY im

NO DATA AVAILABLE - HO DATA AVAILABLE -

SPRING

a 12 16 HOUR BIN HOUR BIN

■ NO FREQ AVAIL % OF 5-9 MHz AVAIL

■ % OF 11-15 MHz AVAIL % OF 18-25 MHz AVAIL

m4

NO DATA AVAILABLE - NO DATA AVAILABLE

SPRING

4 8 12 16 HOUR BIN

N1810-GA-95(L)0524U.M68

Figure 77. Percent Availability of Each Frequency Group by Season, Christchurch to Salisbury

46

DAVIS TO CHRISTCHURCH row


100- f 90, m ao' o 70 £ 60 t 50

3 so! S »; a io:

r WINTER _. IOOJ SPRING

) 4 8 12 16 20 24

HOUR BIN

( > 4 8 12 16 20

HOUR BIN

24

-♦- NO FREQ AVAIL. -A- % OF 11-15 MHz AVAIL. -*- % OF 5-9 MHz AVAIL. -•- % OF 18-25 MHz AVAIL.

1994



N1810-GA-95(L)0524U.M69

Figure 78. Percent Availability of Each Frequency Group by Season, Davis to Christchurch

Al


NO DATA AVAILABLE NO DATA AVAILABLE -

SPRING

4 8 12 16 HOUR BIN

ISM

■ NO FREQ AVAIL % OF 5-9 MHz AVAIL

■ % OF 11-15 MHz AVAIL ' % OF 18-25 MHz AVAIL

SUMMER

12 16 HOUR BIN

NO DATA AVAILABLE

NO DATA AVAILABLE - - NO DATA AVAILABLE

N1810-GA-95(L)0524U.M70

Figure 79. Percent Availability of Each Frequency Group by Season, Davis to McMurdo

48

DAVIS TO SALISBURY 1993

NO DATA AVAILABLE ~

FALL

1994

■ NO FREQ AVAIL % OF S-9 MHz AVAIL

' %OF11-15MHzAVAIL %OF18-25 MHz AVAIL

SUMMER

4 8 12 16 HOUR BIN

NO DATA AVAILABLE -

- NO DATA AVAILABLE

NO DATA AVAILABLE

N1810-GA-95(L)0524U.M71

Figure 80. Percent Availability of Each Frequency Group by Season, Davis to Salisbury

49

SALISBURY TO CHRISTCHURCH mi

NO DATA AVAILABLE NO DATA AVAILABLE

SPRING

HOUR BIN HOUR BIN

im NO FREQ AVAIL % OF 5-9 MHz AVAIL

- % OF 11-15 MHz AVAIL % OF 18-25 MHz AVAIL

90, iiUMMtR

80- 70n 60. 50. 40. 30i 20. 10- o| r~~~^ ■ ^""t i 1—■" ~i

12 16 HOUR BIN

SPRING

- NO DATA AVAILABLE

12 16 HOUR BIN

N1S10-GA-95(L)0524U.M72

Figure 81. Percent Availability of Each Frequency Group by Season, Salisbury to Christchurch

50

SALISBURY TO DAVIS 1523

NO DATA AVAILABLE -

FALL.

1994

NO FREQ AVAIL. % OF 5-9 MHz AVAIL.

' % OF 11-15 MHz AVAIL % OF 18-25 MHz AVAIL

SUMMER

4 8 12 16 HOUR BIN

NO DATA AVAILABLE

NO DATA AVAILABLE

- NO DATA AVAILABLE

N1810-GA-95(L)0524U.M73

Figure 82. Percent Availability of Each Frequency Group by Season, Salisbury to Davis

51



FALL

8 12 16 HOUR BIN

8 12 16

HOUR BIN

NO FREQ AVAIL.

% OF 5-9 MHz AVAIL %OF11-15MHzAVAIL.

% OF 18-25 MHz AVAIL.

im.

8 12 16

HOUR BIN

FALL

8 12 16

HOUR BIN

N1810-GA-95(L)0524U.M74

Figure 83. Percent Availability of Each Frequency Group by Season, Salisbury to McMurdo

52

JUNE 1993 NUMBER OF SAMPLES PER 4 HOURS ft 20 MAX)

4 8 12 16

TIME(UTC)

JULY 1993 NUMBER OF SAMPLES PER 4 HOURS (124 MAX)

32 3« .34 .31

8 12 16

TIME(UTC)

HIGHEST OBSERVED FREQUENCY CHRISTCHURCH TO DAVIS LINK

WINTER 1993 (MONTHLY DATA SET) STANDARD METHOD

SNR >6dB

HIGHEST OBSERVED FREQUENCY PERCENTILE ■*■ 10% ■*- 50% ■*" 90%

□ PERCENT LINK AVAILABILITY

AUGUST 1993 NUMBER OF SAMPLES PER 4 HOURS

t . 9 . 12 . S t 5 (124 MAX)

7

12 16

TIME (UTC)

N1B1Qdtt><L)(e80U.M1

Figure 84. Exceedance (90%, 50%, and 10%) for Best Frequency, Christchurch-to-Davis Link by Month, Winter 1993 (6-dB Minimum Measured SINAD)

JUNE 1993



20 . 22 . 24 . 19 . 14 . 15

8 12 16

TIME (UTC)

HIGHEST OBSERVED FREQUENCY CHRISTCHURCH TO MCMURDO LINK

WINTER 1993 (MONTHLYDATA SET) STANDARD METHOD

SNR > 6 dB

HIGHEST OBSERVED FREQUENCY PERCENTILE -•-10% -•- 50% ■*- 90%


AUGUST 1993 NUMBER OF SAMPLES PER4 HOURS (124 MAX)

34 . 43

TIME (UTC)

N18KHSieS4l}«BeU.M2

Figure 85. Exceedance (90%, 50%, and 10%) for Best Frequency, Christchurch-to-McMurdo Link by Month, Winter 1993 (6-dB Minimum Measured SINAD)

53

SEPTEMBER 1993

8 12 16

TIME(UTC)

OCTOBER 1993 NUMBER OF SAMPLES PER 4 HOURS (124 MAX)

. 17 17 . 10 .3 .2 . 21 .

8 12 16

TIME (UTC)

HIGHEST OBSERVED FREQUENCY CHRISTCHURCH TO MCMURDQ LINK

SPRING 1993 (MONTHLY DATA SET) STANDARD METHOD

SNR>6dB

HIGHEST OBSERVED FREQUENCY PERCENTILE ■*■ 10% -•" 50% ■*■ 90%


NOVEMBER 1993 NUMBEROF SAMPLES PER4 HOURS (120 MAX)

17 . 15

8 12 16

TIME (UTC) N18KU3A-95«l)0aseUM

Figure 86. Exceedance (90%, 50%, and 10%) for Best Frequency, Christchurch-to-McMurdo Link by Month, Spring 1993 (6-dB Minimum Measured SINAD)

JUNE 1994

- NO DATA AVAILABLE-

HIGHEST OBSERVED FREQUENCY CHRISTCHURCH TO MCMURDQ LINK


SNR>6dB

HIGHEST OBSERVED FREQUENCY PERCENTILE ■*■ 10% "•- 50% ■*- 90%



29 . 21 » . 2 . 1

12 16

TIME (UTC) NIB«M»-9S{L}0eeBUM4

AUGUST 1994 NUMBER OF SAMPLES PER 4 HOURS (124 MAX)

8 12 16

TIME (UTC)

Figure 87. Exceedance (90%, 50%, and 10%) for Best Frequency, Christchurch-to-McMurdo Link by Month, Winter 1994 (6-dB Minimum Measured SINAD)

54

JUNE 1993



HIGHEST OBSERVED FREQUENCY CHRISTCHURCH TO SALISBURY LINK


SNR>6dB

HIGHEST OBSERVED FREQUENCY PERCENTILE ■*■ 10% -•" 50% ■*- 90%

D PERCENT LINK AVAILABILITY

AUGUST 1993

12 16

TIME (UTC)

N1810»9S{L}(MBeU.M5

Figure 88. Exceedance (90%, 50%, and 10%) for Best Frequency, Christchurch-to-Salisbury Link by Month, Winter 1993 (6-dB Minimum Measured SINAD)

SEPTEMBER 1993 NUMBER OF SAMPLES PER 4 HOURS (120 MAX)

10 . «

8 12 16

TIME (UTC)

OCTOBER 1993



SPRING 1993 (MONTHLYDATA SET) STANDARD METHOD

SNR>6dB

HIGHEST OBSERVED FREQUENCY PERCENTILE ■*■ 10% "•- 50% ■*" 90%


NOVEMBER 1993 NUMBER OF SAMPLES PER 4 HOURS (120 MAX)

23 . 25 . 2* . 21

JLo =

TIME (UTC)

N1B10-GA-«HL)Ce9GUMe

Figure 89. Exceedance (90%, 50%, and 10%) for Best Frequency, Christchurch-to-Salisbury Link by Month, Spring 1993 (6-dB Minimum Measured SINAD)

55

JUNE 1994


HIGHEST OBSERVED FREQUENCY CHRISTCHURCH TO SALISBURY I INK


SNR>6dB

HIGHEST OBSERVED FREQUENCY PERCENTILE ■*■ 10% ■*- 50% -*- 90%


JULY 1994

■ NO DATA AVAILABLE-

N1B10-Gl»5<L)ae3SUM7

AUGUST 1993

12 16

TIME (UTC)

Figure 90. Exceedance (90%, 50%, and 10%) for Best Frequency, Christchurch-to-Salisbury Link by Month, Winter 1994 (6-dB Minimum Measured SINAD)


12 16

TIME (UTC)


-+- 13 12 12

100~

12 16

IE (UTC)

HIGHEST OBSERVED FREQUENCY CHRISTCHURCH TO SALISBURY I INK


SNR>6dB

HIGHEST OBSERVED FREQUENCY PERCENTILE ■*■ 10% -•- 50% ■*- 90%


NOVEMBER 1994


Nieio-Gfc-95{i)a]eHj MS

Figure 91. Exceedance (90%, 50%, and 10%) for Best Frequency, Christchurch-to-Salisbury Link by Month, Spring 1994 (6-dB Minimum Measured SINAD)

56

JUNE 1993



8 12 16

TIME(UTC)

HIGHEST OBSERVED FREQUENCY DAVIS TO CHRISTCHURCH LINK


SNR>6dB

HIGHEST OBSERVED FREQUENCY PERCENTILE ■*■ 10% ■#- 50% "*- 90%



8 12 16

TIME (UTC)

N1S10-Gl954L)<»8SUMe

Figure 92. Exceedance (90%, 50%, and 10%) for Best Frequency, Davis-to-Christchurch Link by Month, Winter 1993 (6-dB Minimum Measured SINAD)


-t- 30-

23..

16

9 1=1 J

100,

4 8 12 16

TIME (UTC)

OCTOBER 1993




SNR>6dB

HIGHEST OBSERVED FREQUENCY PERCENTILE ■*■ 10% ■*- 50% -*- 90%



8 12 16

TIME (UTC)

N1S1&GA-asfL)OeSHJ.M10

Figure 93. Exceedance (90%, 50%, and 10%) for Best Frequency, Davis-to-Christchurch Link by Month, Spring 1993 (6-dB Minimum Measured SINAD)

57

DECEMBER 1993


JANUARY 1994 NUMBER OF SAMPLES PER 4 HOURS (120 MAX) _l »8 . 17 . » ^_ 7

8 12 16

TIME (UTC) N181tKMas{L)WeSU.Mt1


SUMMER 199311994 (MONTHLYDATA SET) STANDARD METHOD

SNR>6dB

HIGHEST OBSERVED FREQUENCY PERCENTILE -•- 10% -•- 50% ■*- 90%


FEBRUARY 1994


Figure 94. Exceedance (90%, 50%, and 10%) for Best Frequency, Davis-to-Christchurch Link by Month, Summer/Winter 1993 (6-dB Minimum Measured SINAD)

JUNE 1993



12 16

TIME (UTC)

HIGHEST OBSERVED FREQUENCY DAVISTOMCMURnniINK


SNR>6dB



AUGUST 1993

■ NODATAAVALABLE-

N1S10-GlS5{lX»aSU M12

Figure 95. Exceedance (90%, 50%, and 10%) for Best Frequency, Davis-to-McMurdo Link by Month, Winter 1993 (6-dB Minimum Measured SINAD)

58


8 12 16

TIME(UTC)

OCTOBER 1993 NUMBER OF SAMPLES PER 4 HOURS 1124 MAX)

25 . «7 . W . U . 1» . 14 .

HIGHEST OBSERVED FREQUENCY nAVISTOMCMURDOLINK


SNR>6dB

HIGHEST OBSERVED FREQUENCY PERCENTILE ■*■ 10% "•" 50% ■*- 90%



22 . 38 3« . 33 . 2«. 2» -t-

30

23..

£ 16

4 8 12 16

TIME (UTC)

N1B1O-Gl034l)GeiMM13

Figure 96. Exceedance (90%, 50%, and 10%) for Best Frequency, Davis-to-McMurdo Link by Month, Spring 1993 (6-dB Minimum Measured SINAD)

DECEMBER 1993 NUMBER OF SAMPLES PER 4 HOURS (124 MAX)

-I-

g 16

100- £

-i 4 8 12 16

TIME (UTC)

JANUARY 1994 NUMBER OF SAMPLES PER 4 HOURS (120 MAX)

23 . 2«

12 16

TIME (UTC)

HIGHEST OBSERVED FREQUENCY DAVIS TO MCMURDO LINK


SNR>6dB

HIGHEST OBSERVED FREQUENCY PERCENTILE ■*■ 10% "•- 50% -*- 90%


FEBRUARY 1994 NUMBER OF SAMPLES PER 4 HOURS (112 MAX)

12 16

TIME (UTC)

NieilKGl05{L)Oe9SU MU

Figure 97. Exceedance (90%, 50%, and 10%) for Best Frequency, Davis-to-McMurdo Link by Month, Summer 1993/1994 (6-dB Minimum Measured SINAD)

59

DECEMBER 1992


JANUARY 1993


HIGHEST OBSERVED FREQUENCY DAVIS TO SALISBURY I INK


SNR>6dB

HIGHEST OBSERVED FREQUENCY PERCENTILE -■-10% -•- 50% "*- 90%


FEBRUARY 1993 NUMBER OF SAMPLES PER4 HOURS (112 MAX)

. 12 . 12 . 11 8 4 ■ 4

4 8 12 16

TIME (UTC) NIBIO-Gt-OüaKBNU M115

Figure 98. Exceedance (90%, 50%, and 10%) for Best Frequency, Davis-to-Salisbury Link by Month, Summer 1992/1993 (6-dB Minimum Measured SINAD)

MARCH 1993



AUTUMN 1993 (MONTHLYDATA SET) STANDARD METHOD

SNR>6dB

HIGHEST OBSERVED FREQUENCY PERCENTILE ■*■ 10% -•- 50% -*- 90%


APRIL 1993 NUMBER OF SAMPLES PER 4 HOURS (120 MAX)

MAY 1993


N1S1D.Gft-BSOKeSMJ.Mie

Figure 99. Exceedance (90%, 50%, and 10%) for Best Frequency, Davis-to-Salisbury Link by Month, Fall 1993 (6-dB Minimum Measured SINAD)

60

JUNE 1993 NUMBER OF SAMPLES PER 4 HOURS (120 MAX)

12 16

TIME (UTC)

JULY1993 NUMBER OF SAMPLES PER 4 HOURS 1124 MAX)

8 12 16

TIME (UTC)

HIGHEST OBSERVED FREQUENCY DAVIS TO SALISBURY LINK


SNR>6dB

N1B1D-G^flS{L)0e«U MU

HIGHEST OBSERVED FREQUENCY PERCENTILE -•-10% "•- 50% ■*- 90%


AUGUST 1993


Figure 100. Exceedance (90%, 50%, and 10%) for Best Frequency, Davis-to-Salisbury Link by Month, Winter 1993 (6-dB Minimum Measured SINAD)

SEPTEMBER 1993



2)

S 12 16

TIME (UTC)



SNR>6dB

HIGHEST OBSERVED FREQUENCY PERCENTILE "•-10% -*■ 50% "*- 90%



25 , 3« , 3« , 35 . 29 , 2»

12 16

TIME (UTC)

N181O-Gl95«U0e8eUMia

Figure 101. Exceedance (90%, 50%, and 10%) for Best Frequency, Davis-to-Salisbury Link by Month, Spring 1993 (6-dB Minimum Measured SINAD)

61

DECEMBER 1993 NUMBER OF SAMPLES PER 4 HOURS («24 MAX)

23 . 3$ 21 . 1t . 8


1» . 11 , 32 . 32 . 2» »9



SNR>6dB

HIGHEST OBSERVED FREQUENCY PERCENTILE ■*■ 10% ■*- 50% "*- 90%


FEBRUARY 1994


Nm(M>i»5<L)aeaGU.Mig


SEPTEMBER 1993

4 8 12 16

TIME(UTC)

OCTOBER 1993


HIGHEST OBSERVED FREQUENCY MCMURDO TO CHRISTCHURCH I INK


SNR>6dB



N1S10-G^K(L)t»ESUM2C

NOVEMBER 1993


Figure 103. Exceedance (90%, 50%, and 10%) for Best Frequency, McMurdo-to- Christchurch Link by Month, Spring 1993 (6-dB Minimum Measured SINAD)

62

DECEMBER 1992

NO DATA AVAILABLE -

JANUARY 1993


Niai<M3^K{UWB«JM

HIGHEST OBSERVED FREQUENCY MCMURDQ TO DAVIS LINK


SNR>6dB

HIGHEST OBSERVED FREQUENCY PERCENTILE Hh 10% -•- 50% ■*- 90%


FEBRUARY 1993

Figure 104. Exceedance (90%, 50%, and 10%) for Best Frequency, McMurdo-to-Davis Link by Month, Summer 1992/1993 (6-dB Minimum Measured SINAD)

MARCH 1993 NUMBER OF SAMPLES PER 4 HOURS (124 UAX)

S 12 16

TIME (UTC)

APRIL 1993


HIGHEST OBSERVED FREQUENCY MCMURDQ TO DAVIS LINK


SNR>6dB

HIGHEST OBSERVED FREQUENCY PERCENTILE -•- 10% ■•" 50% -A- 90%


MAY 1993


NIBIO-U-gsfUOSWU M23

Figure 105. Exceedance (90%, 50%, and 10%) for Best Frequency, McMurdo-to-Davis Link by Month, Fall 1993 (6-dB Minimum Measured SINAD)

63


21 . 11 . 23

23

16

T100-. &

8 12 16

TIME (UTC)

JULY 1993

S 12 16

TIME (UTC)

HIGHEST OBSERVED FREQUENCY SALISBURY TO CHRISTCHDRKH


SNR>6dB



AUGUST 1993

-i- 30-r

23

16 r

NUMBER OF SAMPLES PER 4 HOURS (124 MAX) M . «3 . 70 55 47 74

3

4 8 12 16

TIME (UTC) WBUMilKQOWaSUMZ]

Figure 106. Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to- Christchurch Link by Month, Winter 1993 (6-dB Minimum Measured SINAD)

SEPTEMBER 1993

8 12 16

TIME (UTC)

OCTOBER 1993

M«10-G*-95(L)08B0U.Ma

HIGHEST OBSERVED FREQUENCY SALISBURY TO CHRISTCHURKH I INK


SNR>6dB




8 12 16

TIME (UTC)

Figure 107. Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to- Christchurch Link by Month, Spring 1993 (6-dB Minimum Measured SINAD)

64

DECEMBER 1993

4 8 12 16

TIME(UTC)

JANUARY 1994

S 12 16

TIME (UTC)

HIGHEST OBSERVED FREQUENCY SALISBURY TO CHRISTCHURCH LINK SUMMER 199311994 (MONTHLYDATA SET)

STANDARD METHOD SNR>6dB

N1810-GA.B5{L)tteOU.M2i

HIGHEST OBSERVED FREQUENCY PERCENTILE -*■ 10% "•- 50% ■*■ 90%


FEBRUARY 1994


Figure 108. Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to- Christchurch Link by Month, Summer 1993/1994 (6-dB Minimum Measured SINAD)

JUNE 1994


JULY 1994


Nisio-GA-es<L)oeeeu.M»

HIGHEST OBSERVED FREQUENCY SALISBURY TO CHRISTCHURCH LINK


SNR>6dB

HIGHEST OBSERVED FREQUENCY PERCENTILE -•-10% -*■ 50% "A- 90%


AUGUST 1993

TIME (UTC)


65

SEPTEMBER 1994 NUMBER OF SAMPLES PER 4 HOURS (f20 MAX)

a »'r

1«U

50<

4 $

4 8 12 16

TIME(UTC)

OCTOBER 1994 NUMBER OF SAMPLES PER 4 HOURS ((24 MAX)

40 . 4$ . 7» . 47 . 29

S 12 16

TIME (UTC) N1B10-<M-05<l)C«8BUM27

HIGHEST OBSERVED FREQUENCY SALISBURY TO CHRISTCHURCH I INK


SAW? > 6 dB

HIGHEST OBSERVED FREQUENCY PERCENTILE ■*■ 10% ■•- 50% ■*- 90%


NOVEMBER 1994


Figure 110 Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to- Christchurch Link by Month, Spring 1994 (6-dB Minimum Measured SINAD)

DECEMBER 1992


JANUARY 1993

8 12 16

TIME (UTC)

NIBIO-GK-asfLKBSeUMai

HIGHEST OBSERVED FREQUENCY SALISBURY TO DAVIS I INK


SNR>6dB



FEBRUARY 1993

4 8 12 16

TIME (UTC)

Figure 111. Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to-Davis Link by Month, Summer 1992/1993 (6-dB Minimum Measured SINAD)

66

MARCH 1993 NUMBER OF SAMPLES PER 4 HOURS (124 MAX)

8 12 16

TIME (UTC)


41 . 5» . t2 . S2 . 4» . 3»

HIGHEST OBSERVED FREQUENCY SALISBURY TO DAVIS LINK


SNR>6dB

HIGHEST OBSERVED FREQUENCY PERCENTILE ■*■ 10% "•" 50% tk- 90%


MAY 1993 NUMBER OF SAMPLES PER 4 HOURS (124 MAX)

5 . 21 . 23 . t« . 13 . 9

N1810-GA-9S<1)MG0UM3S

Figure 112. Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to-Davis Link by Month, Fall 1993 (6-dB Minimum Measured SINAD)


8 12 16

TIME (UTC)

JULY 1993 NUMBER OF SAMPLES PER 4 HOURS ^fM «MX;

50 , 71 . e» . 54 . S1 . 42

8 12 16

TIME (UTC)



SNR>6dB

N1810-Gfc0S<IJ<MB0U MX

HIGHEST OBSERVED FREQUENCY PERCENTILE ■*■ 10% "•- 50% "A" 90%


AUGUST 1993


Figure 113. Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to-Davis Link by Month, Winter 1993 (6-dB Minimum Measured SINAD)

67

SEPTEMBER 1993



Tt.tt.4i . 22

4 8 12 16

TIME (UTC)

N1SI0-GtS!«L)OttMJM3t

HIGHEST OBSERVED FREQUENCY SALISBURYTODAVISIINK


SNR >6dB

HIGHEST OBSERVED FREQUENCY PERCENTILE -*- 10% -»-50% ■*- 90%


NOVEMBER 1993 NUMBER OF SAMPLES PER 4 HOURS (120 »

40 . 4t

Figure 114. Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to-Davis Link by Month, Spring 1993 (6-dB Minimum Measured SINAD)


2»

JANUARY 1994

HIGHEST OBSERVED FREQUENCY SALISBURY TO DAVIS I INK


SNR > 6 dB

HIGHEST OBSERVED FREQUENCY PERCENTILE ■*■ 10% -»-50% -*- 90%


FEBRUARY 1994


N1B10-GlS5{L)Oa»J M32


68

DECEMBER 1992



40 . 30 . 73 . 73 . S3 . SO .

iu 9 ■ ■ i it

a 12 16

TIME (UTC)

HIGHEST OBSERVED FREQUENCY SALISBURY TO MCMURDO LINK


SNR>6dB

HIGHEST OBSERVED FREQUENCY PERCENTILE -•-10% -•- 50% -*~ 90%


FEBRUARY 1993 NUMBER OF SAMPLES PER 4 HOURS (112

4 8 12 16

TIME (UTC)

N1B10-G^g5(UCSegU.M33

Figure 116. Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to-McMurdo Link by Month, Summer 1992/1993 (6-dB Minimum Measured SINAD)


4»

TIME (UTC)

APRIL 1993



AUTUMN 1993 (MONTHLY DATA SET) STANDARD METHOD

SNR>6dB

HIGHEST OBSERVED FREQUENCY PERCENTILE -•-10% -»-50% ■*" 90%


MAY 1993


N1B10-GA-B5{l)O88StJ MX

Figure 117. Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to-McMurdo Link by Month, Fall 1993 (6-dB Minimum Measured SINAD)

69

JUNE 1993


JULY 1993

12 16

TIME (UTC) Nlg10-GU5<L)OeSM) MX



SAH? > 6 dB

HIGHEST OBSERVED FREQUENCY PERCENTILE "•-10% "»-50% -*- 90%


AUGUST 1993

Figure 118. Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to-McMurdo Link by Month, Winter 1993 (6-dB Minimum Measured SINAD)

SEPTEMBER 1993 NUMBER OF SAMPLES PEP 4 HOURS (124 MAX)

88 . 83 «0 . 80 . »<

TIME (UTC)


. 104 10t lot lot . lot . 104

8 12 16

TIME (UTC)



SNR>6dB




, «17 , 105 . IPS . 104 . 102 . »7 .

4 | 23

£ 16

id 9 EE

1<HU

50 <

8 12 16

TIME (UTC) N1S10-GMS<L)0Seeu M3S

Figure 119. Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to-McMurdo Link by Month, Spring 1993 (6-dB Minimum Measured SINAD)

70

DECEMBER 1993 NUMBER OF SAMPLES PER 4 HOURS 1124 MAX)

4 8 12 16

TIME (UTC)


»» . TO . »2 . «0 . «0 , »2

';!£^t=f^"S 4 8 12

TIME (UTC)



SNR>6dB

HIGHEST OBSERVED FREQUENCY PERCENTILE -•-10% "•-50% •*- 90%



9« , 101 . 93 . «3 , «4 , 91 ,

8 12 16 20

TIME (UTC)

io-Gig5(i)oasgu.M3r



4, 3, 4 . 4,4, «,

8 12 16

TIME (UTC)


8 12 16

TIME (UTC)


AUTUMN 1994 (MONTHLY DATA SET) STANDARD METHOD

SNR>6dB

N1810-GW)5{L)O8l»J M»

HIGHEST OBSERVED FREQUENCY PERCENTILE ■*■ 10% "•- 50% ■*- 90%


MAY 1994



71

JUNE 1994


JULY 1994

12 16

TIME (UTC) NIBIO-GMEKLpseeUM»

HIGHEST OBSERVED FREQUENCY SALISBURY TO MCMURDQ LINK


SNR>6dB

HIGHEST OBSERVED FREQUENCY PERCENTILE -•-10% "•- 50% "*- 90%


AUGUST 1994

4 8 12 16

TIME (UTC)


SEPTEMBER 1994 NUMBER OF SAMPLES PER 4 HOURS (124 MAX) HIGHEST OBSERVED FREQUENCY

SALISBURY TO MCMURDQ LINK SPRING 1994 (MONTHLYDATA SET)

STANDARD METHOD SNR>6dB

HIGHEST OBSERVED FREQUENCY PERCENTILE -■-10% "•- 50% ■*- 90%


OCTOBER 1994

30

NUMBER OF SAMPLES PER 4 HOURS (124 MAX) '2 , »2 , 1 92 82 »?

I 16

S »

T100_

—^ä50!

8 12 16

TIME (UTC) NiBio-s^s5aioaeeu.M40


4 8 12 16

TIME (UTC)


72

DECEMBER 1994

* a 12

T1ME(UTC)

JANUARY 1995




SNR>6dB

HIGHEST OBSERVED FREQUENCY PERCENTILE -•-10% -«-50% ■*- 90%


FEBRUARY 1995


N1810-GA-054L)0889U M41

Figure 124. Exceedance (90%, 50%, and 10%) for Best Frequency, Sattsbury-to-McMurdo Link by Month, Summer 1994/1995 (6-dB Minimum Measured SINAD)


4 8 12 16

TIME (UTC)

JULY 1993


HIGHEST OBSERVED FREQUENCY CHRISTCHURCH TO DAVIS LINK


SNRZ12dB

HIGHEST OBSERVED FREQUENCY PERCENTILE "*• 10% "•- 50% ■*" 90%


AUGUST 1993


NI81(W]A-«[L)088SUAf42

Figure 125. Exceedance (90%, 50%, and 10%) for Best Frequency, Christchurch-to-Davis Link by Month, Winter 1993 (12-dB Minimum Measured SINAD)

73

JUNE 1993


JULY 1993 NUMBER OF SAMPLES PER 4 HOURS (124 MIX)

-+-

^

100_

50 8

8 12 16

TIME (UTC) HISICLaA-«(L>3U9UM43

HIGHEST OBSERVED FREQUENCY CHRISTCHURCH TO MCMLJRnO I INK


SNRa12dB

HIGHEST OBSERVED FREQUENCY PERCENTER ■*■ 10% -•- 50% "*- 90%



8 12 16

TIME (UTC)

Figure 126. Exceedance (90%, 50%, and 10%) for Best Frequency, Christchurch-to- McMurdo Link by Month, Winter 1993 (12-dB Minimum Measured SINAD)


17 , 20 . 22 . 21 . 22 . 19

4 6 12 16

TIME (UTC)


e 12 16

TIME (UTC)



SNR*12dB

HIGHEST OBSERVED FREQUENCY PERCENTTLE ■*■ 10% -•- 50% "*- 90%



4 6 12 16

TIME (UTC)

Figure 127. Exceedance (90%, 50%, and 10%) for Best Frequency, Christchurch-to- McMurdo Link by Month, Spring 1993 (12-dB Minimum Measured SINAD)

74

JUNE 1993


JULY 1993



SNR*12dB

HIGHEST OBSERVED FREQUENCY PERCENTILE ■*■ 10% "•" 50% ■*" 90%


AUGUST 1993

TIME (UTC)

N181CLaA-9S(!J0«aHJ43

Figure 128. Exceedance (90%, 50%, and 10%) for Best Frequency, Christchurch-to- Salisbury Link by Month, Winter 1993 (12-dB Minimum Measured SINAD)

DECEMBER 1993


JANUARY 1994

8 12 16

TIME (UTC)



SNR212dB

HIGHEST OBSERVED FREQUENCY PERCENTILE ■*" 10% "•- 50% ■*" 90%


FEBRUARY1994


tmi(W3A-M(ijoaesuM«

Figure 129. Exceedance (90%, 50%, and 10%) for Best Frequency, Davis-to-Christchurch Link by Month, Summer 1993/1994 (12-dB Minimum Measured SINAD)

75

JUNE 1993


HIGHEST OBSERVED FREQUENCY DAVIS TO MCMURDOI INK

W7A/7TER 1993 (MONTHLYDATA SET) STANDARD METHOD

SNR*12dB

HIGHEST OBSERVED FREQUENCY PERCENTILE ■*■ 10% "♦- 50% ■*- 90%


JULY 1993 AUGUST 1993


NUMBER OF SAMPLES PER 4 HOURS (124 MAX)

11 . 25 . 19 .7 Ü ?

s >-

»0

23

6|

rl(H &

_l

S " d 3 Tr-—« _V m^^*

cc u. ^m-^^y1 ^^^v^

N1B10-OA

) 4 8 12 16 20 2

TIME (UTC)

i


SEPTEMBER 1993 NUMBER OF SAMPLES PER 4 HO URS (120 MAX)


a is

100„



SNR2l2dB

HIGHEST OBSERVED FREQUENCY PERCENTILE ■*" 10% "♦■ 50% ■*" 90%



! 22 | 36 | 36 | 33 [ 26 . 28

4 8 12 16

TIME (UTC)


76


8 . 25 . 40 . 22 . 17 . 8

100_

a 50 <

> 12 16

TIME (UTC)

JANVARY1994 NUMBER OF SAMPLES PER 4 HOURS (120 MAX)

23 . 26 . 40 . 41 . 28 ■ 26

T100„

S 12 16

TIME (UTC)



SNR2l2dB

HIGHEST OBSERVED FREQUENCY PERCENT1LE ■*■ 10% "•- 50% ■*- 90%



8 12 16

TIME (UTC)

K!8!(W5A-M(L)0SBSUM«9


DECEMBER 1992


JANUARY1993

■ NO DA TA AVAILABLE -

NISI &OA-93(L)0S8KrMl M



SNR 212 dB

HIGHEST OBSERVED FREQUENCY PERCENTTLE ■*" 10% "•" 50% "*~ 90%


FEBRUARY 1993

TIME (UTC)


11

SEPTEMBER 1993



26 . S7 . 73

12 16

TIME (UTC) N!S10-GA.H{t.y»*Kra3!



SNR*12dB

HIGHEST OBSERVED FREQUENCY PERCENTTLE "*- 10% -•- 50% "*- 90%


NOVEMBER 1993 NUMBER OF SAMPLES PER 4BOURS (120 MAX)

'^^^2

100„ &

50 <

TIME (UTC)


DECEMBER 1993

JANUARY 1994

12 16

TIME (UTC)



SNR212dB

HIGHEST OBSERVED FREQUENCY PERCENTTLE ■*■ 10% •*- 50% •*- 90%


FEBRUARY 1994


N18110A-9i(LlOTS5UWJl


78

DECEMBER 1992


JANUARY1993


SlSIO-QA-MfLJOSMUMS]

HIGHEST OBSERVED FREQUENCY MCMURDO TO DAVIS LINK


SNR*12dB

HIGHEST OBSERVED FREQUENCY PERCENTILE ■*■ 10% -*■ 50% ■*- 90%


FEBRUARY 1993

4 8 12

TIME (UTC)

136. Exceedance (90%, 50%, and 10%) for Best Frequency, McMurdo-to-Davis Link by Month, Summer 1992/1993 (12-dB Minimum Measured SINAD)

MARCH 1993

12 16

TIME (UTC)

APRIL 1993


HIGHEST OBSERVED FREQUENCY MCMURDO TO DAVIS LINK


SNR*12dB

HIGHEST OBSERVED FREQUENCY PERCENTER ■*■ 10% ■*- 50% ■*" 90%


MAY 1993


N1BiaGA-9J(L)08Sroie«

137. Exceedance (90%, 50%, and 10%) for Best Frequency, McMurdo-to-Davis Link by Month, Fall 1993 (12-dB Minimum Measured SINAD)

79

JUNE 1993 NUMBER OF SAMPLES PER 4 HOURS (120 MAX) 22 . 27 . 26 . 21 , a . 23 ,

so <

8 12 16 20 24

TIME(UTC)

JULY 1993 NUMBER OF SAMPLES PER 4 BO URS (124 MAX)

8 12 10

TIME (UTC)

HIGHEST OBSERVED FREQUENCY SALISBURY TO CHRISTCHURCH


SNR*12dB

HIGHEST OBSERVED FREQUENCY PERCENTTLE ■*■ 10% -•- 50% -*- 90%


AUGUST 1993

8 12 10

TIME (UTC) NiaiO-OA-95(L)08SÄIAeS

138. Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to-Christchurch Link by Month, Winter 1993 (12-dB Minimum Measured SINAD)


100„

12 16

TIME (UTC)

-H lo -1


30

| 23

£ 16 LU

S 9

2

-J-

£l

100 _.

50 <

12 16

TIME (UTC)



SNR*12dB

HIGHEST OBSERVED FREQUENCY PERCENTTLE ■*■ 10% -*- 50% ■*- 90%



-+-

231 i

16..

T100_

8 12 16

TIME (UTC) H1S10.GA.M[L»»SSUM3S


80

DECEMBER 1993


JANUARY 1994 NUMBER OF SAMPLES PER 4HOVRS (120 MAX)

4 8 12 16

T1ME(UTC)

HIGHEST OBSERVED FREQUENCY SALISBURY TO CHRISTCHURCH LINK SUMMER 199311994 (MONTHLY DATA SET)

STANDARD METHOD SNR2l2dB

N]»iaOA-9S(L)0!89UMS7

HIGHEST OBSERVED FREQUENCY PERCENT1LE -*■ 10% "•- 50% "A" 90%


FEBRUARY 1994


Figure 140. Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to- Christchurch Link by Month, Summer 1993/1994 (12-dB Minimum Measured SLNAD)

JUNE 1994

■ NO DA TA AVAILABLE -

JULY 1994


N1SI0-GA-9J(L)0SS9UMSS



SNR*12dB

HIGHEST OBSERVED FREQUENCY PERCENTILE ■*■ 10% ■*- 50% ■*- 90%


AUGUST 1993 NUMBER OF SAMPLES PER 4BOURS (124MAJQ

i 23 f ' £ 16

T100_

&

8 12 16

TIME(UTC)


81


37 . 32 . 23 . 19 . IS . 3S

V^&

100„

12 16

TIME (UTC)

OCTOBER 1994 NUMBER OF SAMPLES PER 4 BOVRS (124 MAX)

^^5i

100„

8 12 16

TIME (UTC)



SNR*12dB

HIGHEST OBSERVED FREQUENCY PERCENTILE ■*- 10% ^- 50% -*- 90%

□PERCENT LINK AVAILABILITY

NOVEMBER 1994


N1S!0-aA-9S(L)0g&iUMK


DECEMBER 1992



4 8 12

TIME (UTC)

HIGHEST OBSERVED FREQUENCY SALISBURY TO DAVIS IINK

SUMMER 199211993 (MONTHLY DATA SET) STANDARD METHOD

SNR212dB

HIGHEST OBSERVED FREQUENCY PERCENTILE "*■ 10% ■*- 50% •*- 90%

□ PERCENT LINK AVADLABILITY

FEBRUARY1993 NUMBER OF SAMPLES PER 4 HOURS (112 MAX)

8 12 16

TIME (UTC)


82

MARCH 1993 NUMBER OF SAMPLES PER 4 BOURS (124 MAX)

23

4 8 12 16

TIME(UTC)

APRIL 1993



AUTUMN 1993 flfONTHLYDATA SET) STANDARD METHOD

SNR>12dB

HIGHEST OBSERVED FREQUENCY PERCENTILE ■*- 10% "•- 50% ■*- 90%


MAY 1993


N181&GA-9J(LX«aWMSl

Figure 144. Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to-Davis Link by Month, Fall 1993 (12-dB Minimum Measured SINAD)

JUNE 1993 NUMBER OF SAMPLES PER 4 BOURS (129 MAX)

8 12 16

TIME (UTC)

JULY1993




SNR*12dB

HIGHEST OBSERVED FREQUENCY PERCENTILE ■*■ 10% "♦" 50% ■*- 90%


AUGUST 1993


NlS!0-aA-K(L)0«SUM«

Figure 145. Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to-Davis Link by Month, Winter 1993 (12-dB Minimum Measured SINAD)

83

SEPTEMBER 1993


OCTOBER 1993


H1SIO-GA-«(L)0aKUM£]



SNR*12dB

HIGHEST OBSERVED FREQUENCY PERCENTILE "*■ 10% "♦■ 50% ■*- 90%



30 •+-

23

16

•■P

100„

12 18

TIME (UTC)


DECEMBER 1993 NUMBER OF SAMPLES PER 4 SOURS (124 MAX)

-+- 30

23

16

TIME (UTC)


4 8 12 16

TIME (UTC)



SNR212dB

HIGHEST OBSERVED FREQUENCY PERCENTILE ■*• 10% "•- 50% ■*" 90%

□ PERCENT LINK AVADLABIUTY

FEBRUARY 1994


N1S!0-QA-9;(L)aSSHmg4


84

DECEMBER 1992


JANVARY1993 NUMBER OF SAMPLES PER 4 HOURS (120 MAX)

8 12 16

TIME (UTC)



SNR212ÖB

HIGHEST OBSERVED FREQUENCY PERCENTILE ■+■ 10% -•- 50% ■*- 90%



61 . 62 . 71 . S4 . 41 . 56

TIME (UTC)

Nl»lCW3A-M(L]Og!9Ui(SS



4 a 12 16

TIME (UTC)

APRIL 1993




SNR>12dB

HIGHEST OBSERVED FREQUENCY PERCENTILE ■*" 10% ■•- 50% ■*" 90%

□ PERCENT LINK AVATLABnTTY

MAY 1993


N1S1K3A-95(L)0M«IMS«


85

JUNE 1994


JULY1994


NIS10-aA-93(L]OS!Hrag7



SNRz12dB

HIGHEST OBSERVED FREQUENCY PERCENTILE "•- 10% -•- 50% -*- 90%



114 . Ill 1109 . 108 . 108 . 109

4 S 12 16

TIME (UTC)


SEPTEMBER 1993


OCTOBER 1993 NUMBER OF SAMPLES PER 4 SOURS (124 MAX)

104 . 108 108 . log . 106 . 104

S 16

12 16

TIME (UTC)

T100_

la =>



SNR*12dB

HIGHEST OBSERVED FREQUENCY PERCENTILE "•" 10% "•■ 50% -*- 90%



<i 16

100 _

50 |

12 16

TIME (UTC) N[SI&£A-H[!.)0SS7ra£!


86


14

TIME (UTC)

JANUARY1994 NUMBER OF SAMPLES PER 4 SOURS (120 MAX)

12 16

TIME (UTC)



SNR*12dB

HIGHEST OBSERVED FREQUENCY PERCENT1LE "*- 10% "•■ 50% "A- 90%


FEBRUARY 1994 NUMBER OF SAMPLES PER 4 HOURS (112 MAX}

4 8 12

TIME (UTC)

NI!10-aA-H(LX)»g;jiU9


SEPTEMBER 1994



-t-

I 23

£ 1«

S •

ioo„

8 12 1

TIME (UTC)



SNRi12dB

HIGHEST OBSERVED FREQUENCY PERCENTTLE ■*■ 10% "•- 50% "*■ 90%


NOVEMBER 1994 NUMBER OF SAMPLES PER 4 HOURS a20 MAX)

116 . 116 . 116

TIME (UTC)

N1BiaOA-9J(L)0SS9OM70

Figure. 153. Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to-McMurdo Link by Month, Spring 1994 (12-dB Minimum Measured SINAD)

87

DECEMBER 1994 NUMBBR OF SAMPLES PER 4HOURS (124 MAX)

4 8 12 16

TIME (UTC)

JANUARY1995




SNRZ12dB

HIGHEST OBSERVED FREQUENCY PERCENTTLE ■*" 10% -•>- 50% ■*- 90%


FEBRUARY 1995


N181CK3A-»(L)08BSUim


JUNE 1993



8 12 16

TIME (UTC)



SNRi 18ÖB

HIGHEST OBSERVED FREQUENCY PERCENT1LE ■*■ 10% -•- 50% ■*- 90%



4 8 12 16

TIME (UTC) N]S10.GA.M[L)08SWJM72

Figure 155. Exceedance (90%, 50%, and 10%) for Best Frequency, Christchurch-to- McMurdo Link by Month, Winter 1993 (18-dB Minimum Measured SINAD)

88

SEPTEMBER 1993 NUMBER OF SAMPLES PER 4 HOURS ait MAX)

22 . 21 . 22 . 19 .

12 16

TIME (UTC)

OCTOBER 1993




SNR*18dB

HIGHEST OBSERVED FREQUENCY PERCENTILE

■*■ 10% "♦■ 50% -A- 90%

CH PERCENT LINK AVAILABILITY


is n

8 12 16

TIME (UTC)

Figure 156. Exceedance (90%, 50%, and 10%) for Best Frequency, Christchurch-to- McMurdo Link by Month, Spring 1993 (18-dB Minimum Measured SINAD)

JUNE 1993


JULY1993 NUMBER OF SAMPLES PER 4 HOURS (12* MAX)

43

8 12 16

TIME (UTC)



SNRZ18dB

HIGHEST OBSERVED FREQUENCY PERCENTILE -*■ 10% "•" 50% "A- 90%


AUGUST 1993 NUMBER OF SAMPLES PER 4 SOURS (124 MAX)

" I » I " ■ " I " I « I

4 6 12 16

TIME (UTC)

NlS10-aA.9S(L*>SS9U7<

Figure 157. Exceedance (90%, 50%, and 10%) for Best Frequency, Christchurch-to- Salisbury Link by Month, Winter 1993 (18-dB Minimum Measured SINAD)

89

JUNE 1993


JULY1993 NUMBER OF SAMPLES PER 4 HOURS (124 MAX)

12 16

TIME(UTC)

HIGHEST OBSERVED FREQUENCY DAVIS TO MCMURDO I INK


SNRHSdB

HIGHEST OBSERVED FREQUENCY PERCENTILE "*■ 10% -•- 50% •*- 90%


AUGUST 1993




8 12 16

TIME (UTC)

HIGHEST OBSERVED FREQUENCY DAVIS TO MCMURDO I INK


SNRZ18dB

HIGHEST OBSERVED FREQUENCY PERCENTILE ■*■ 10% -•- 50% "*- 90%



12 16

TIME (UTC) NlglO£A.9S(L)»«9i;M7£

NOVEMBER 1993

-t 30-r

23

16


22 . 36 . 36 . 33 . 26 . 2»

S 12 1

TIME (UTC)


90

DECEMBER 1993 NUMBER OF SAMPLES PER 4BOURS (124 MAX)

-t-

23

16

9..

2

100_

50 <

TIME (UTC)


12 16

TIME (UTC)



SNRZ18dB

HIGHEST OBSERVED FREQUENCY PERCENTTLE ■*■ 10% "•- 50% ■*- 90%


FEBRUARY 1994

4 8 12

TIME (UTC)

N1S10-OA-«(I.)CBa9U.M77' •


SEPTEMBER 1993


OCTOBER 1993


N1S10Â-«(L)0M9U.M7S



SNRZ18dB

HIGHEST OBSERVED FREQUENCY PERCENTILE "*■ 10% ■♦" 50% -A- 90%



12 16

TIME (UTC)


91

MARCH 1993

APRIL 1993


HIGHEST OBSERVED FREQUENCY MCMURDO TO DAVIS 1 INK


SNRZ18dB

HIGHEST OBSERVED FREQUENCY PERCENTILE ■*■ 10% ■*- 50% •*- 90%


MAY 1993


NlS10£A-9}(LggS9UU79

Figure 162. Exceedance (90%, 50%, and 10%) for Best Frequency, McMurdo-to-Davis Link by Month, Fall 1993 (18-dB Minimum Measured SINAD)

SEPTEMBER 1993 NUMBER OF SAMPLES PER 4BOVRS 024 MAX)

<oo_

50 S

12 16

TIME (UTC)

-=»0 24

OCTOBER 1993 NUMBER OF SAMPLES PER 4 HOURS 024 MAX)

100_

50 <

8 12 1

TIME (UTC) N1S10-GA-H(L#!S9UJ4S0

HIGHEST OBSERVED FREQUENCY SALISBURY TO CHRISTCHURCH I INK


SNRZ18ÖB

HIGHEST OBSERVED FREQUENCY PERCENTILE ■*■ 10% ■♦- 50% -*- 90%

□ PERCENT LINK AVAILABRMTY

NOVEMBER 1993



92

DECEMBER 1992


JANUARY 1993

a 12 16

TIME(UTC)



SNRZ18dB

HIGHEST OBSERVED FREQUENCY PERCENTILE ■*■ 10% "•- 50% "*" 90%


FEBRUARY1993

TIME (UTC)

N1B10/3A-95(LJMMU«81

Figure 164. Exceedance (90%, 50%, and 10%) for Best Frequency, Sattsbury-to-Davis Link by Month, Summer 1992/1993 (18-dB Minimum Measured SINAD)

SEPTEMBER 1993


OCTOBER 1993


NlS10-QA-»(L^tE9U.MS2



SNRZ18dB


"*■ 10% -^ 50% ■*- 90%

P PERCENT LINK AVAILABIIIY

NOVEMBER 1993 NUMBER OF SAMPLES PER 4 HOURS (120 MAX}

TIME (UTC)


93

DECEMBER 1992




SNRZ18dB

HIGHEST OBSERVED FREQUENCY PERCENTILE ■*- 10% "♦- 50% ■*- 90%


JANUÄRY1993


FEBRUARY1993 NUMBER OF SAMPLES PER 4 HOURS (112 MAX)

61 . 62 . 71 . 54 41 St

3

>- y 1 UJ 3

S E u.

0.

3.

S^^ *-d

1(K

-1

^CV.^ 50 <

/ * -iîi^g^*-

0 4 8 12 16 20 2

TIME (UTC)

0 -J

H]SIO-GA-«(I.]Ote»UMSl


SEPTEMBER 1993



108 ■ IPS . 108 . 106 . 104

TIME (UTC) NIB!D4}A-S3{LPU9U.MB4

HIGHEST OBSERVED FREQUENCY SALISBURY TO MCMURDO I INK


SNRZ18dB

HIGHEST OBSERVED FREQUENCY PERCENTILE ■*■ 10% "•- 50% •*- 90%


NOVEMBER 1993 NUMBER OF SAMPLES PER 4 HOURS (120 i

107 . IPS , 105 . 104 . 102

12 16

TIME (UTC)


94


TIME (UTC)

JANUARY 1994




SNRH8dB

HIGHEST OBSERVED FREQUENCY PERCENTTLE -*• 10% "•- 50% ■*■ 90%


FEBRVARY1994



SEPTEMBER 1993




SNRZ18dB

HIGHEST OBSERVED FREQUENCY PERCENTttE ■*" 10% -•- 50% ■*" 90%

□ PERCENT LINK AVAn.ABH,ITY

OCTOBER 1993


NOVEMBER 1993 NUMBER OF SAMPLES PER 4HOVBS (120 MAX)

116 . 116 . 116 . 116 . 116 . 116 .

i

I« 0-

3

6

1«

50

U g, >- b _i s <

g - u.

3 < z

( 4 8 12 16 20 2

TIME (UTC)

NIS10-GA-9S(Ly>MSUMS«


95

HIGHEST OBSERVED FREQUENCY CHRISTCHURCH TO DAVIS I INK STANDARD METHOD SNR>6dB

AUTUMN 1993


SPRING 1993


N1B10-GA*5<l|08WU.MST

WINTER 1993 «UMBER OF SAMPLES PER 4 HOURS (111 MAX)

. 11 . 26 . 46 . 50 .21 . 18 .

I ISÄ^Î 10O.

&

HIGHEST OBSERVED FREQUENCY PERC ENTILE -•■10% »»%■*■ 90S

[—I PERCENT LINK L-' AVAILABILITY

8 12 16 20 24

TIME(UTC)

SUMMER 199311994


Figure 170. Exceedance (90%, 50%, and 10%) for Best Frequency, Christchurch-to-Davis Link by Season, 1993 (6-dB Minimum Measured SINAD)

HIGHEST OBSERVED FREQUENCY CHRISTCHIJRCH TO MCMURHO I INK STANDARD METHOD SNR>6dB

AUTUMN 1993


SPRING 1993 NUMBER OF SAMPLES PER 4 HOURS <»« MAX;

WINTER 1993 NUMBER OF SAMPLES PER 4 HOURS (112 MAX)

50 . 66 . 50 . 30 . 25 . 43

HIGHEST OBSERVED FREQUENCY PERC ENTILE ■•-10% -•- 60% ■*- SX1%

12 16 20 24

TIME (UTC)

NieUVGA-eSfUOBMUMSI!

12 16 20 24

TIME (UTC)

SUMMER 199311994


Figure 171. Exceedance (90%, 50%, and 10%) for Best Frequency, Christchurch-to- McMurdo Link by Season, 1993 (6-dB Minimum Measured SINAD)

96

HIGHEST OBSERVED FREQUENCY CHRISTCHURCH TO MCMURDQ LINK STANDARD METHOD SNR>6dB

AUTUMN 1994


SPRING 1994


Niei<U3A-BS<t.)08esU.Mtt


HIGHEST OBSERVED FREQUENCY PERC ENTILE -•■10% -«-50% ■*•»%

1—1 PERCENT LINK •—' AVAILABILITY

TIME (UTC)

SUMMER 199411995



HIGHEST OBSERVED FREQUENCY CHRISTCHURCH TO SALISBURY LINK STANDARD METHOD SNR>6dB

AUTUMN 1993


SPRING 1993 NUMBER OF SAMPLES PER 4 HOURS (112 MAX)

|4l|JI|«|g|«,»


w . ee . JO . «

HIGHEST OBSERVED FREQUENCY PERCENTILE -•■10% -•- SOS ■*■ 00%

1—1 PERCENTLINK •—' AVAILABILITY

12 16 20 24

TIME (UTC)

N1S1&GA-SS{l)08MU MOD

12 16 20 24

TIME (UTC)

SUMMER 199311994


Figure 173. Exceedance (90%, 50%, and 10%) for Best Frequency, Christchurch-to- Salisbury Link by Season, 1993 (6-dB Minimum Measured SINAD)

97

HIGHEST OBSERVED FREQUENCY CHRISTCHURCH TO SALISRLJRY I INK STANDARD METHOD SNR >6dB

AUTUMN 1994


SPRING 1994 NUMBER OF SAMPLES PER 4 HOURS 1112 MAX)


HIGHEST OBSERVED FREQUENCY PERCENTILE ■•■10» ■* 50%-*" 80%

1—1 PERCENT LINK L-J AVAILABILITY

T«XL &

4

N1S1frG^05<L10B8flU.M91

TIME (UTC)

SUMMER 199411995



HIGHEST OBSERVED FREQUENCY DAVIS TO CHRISTCHURCH I INK STANDARD METHOD SNR > 6 dB

AUTUMN 1993


SPRING 1993 NUMBER OF SAMPLES PER 4 HOURS (I« MAX)

I » I " ■ » I S I '


.57.80. 40. 8 .4 . 11 .

T T100-

HIGHEST OBSERVED FREQUENCY PERCENTILE -•-10* — 50% -*■ S0%

TIME (UTC)

TIME (UTC)

SUMMER 199311994 NUMBER OF SAMPLES PER 4 HOURS (112 MAX)

I " I M I * I '

N1810-GA-85(L)0889UM92

Figure 175. Exceedance (90%, 50%, and 10%) for Best Frequency, Davis-to-Christchurch Link by Season, 1993 (6-dB Minimum Measured SINAD)

98

HIGHEST OBSERVED FREQUENCY DAVIS TO MCMURDO LINK STANDARD METHOD SNR>6dB

AUTUMN 1993



WINTER 1993 NUMBER OF SAMPLES PER 4 HOURS (112 MAX) D . 22 . 21 . > . S . 3 .

100. &

«!

* <10 3

HIGHEST OBSERVED FREQUENCY PERCENTILE -••10* »50%-*- «0%

I—1 PERCENT LINK "—' AVAILABILITY

TIME (UTC)


-t- T10O.

& 3

M1S10-GA-a5<L)(«SHIMS3

Figure 176. Exceedance (90%, 50%, and 10%) for Best Frequency, Davis-to-McMurdo Link by Season, 1993 (6-dB Minimum Measured SINAD)

HIGHEST OBSERVED FREQUENCY DAVIS TO SALISBURY LINK STANDARD METHOD SNR >6dB

AUTUMN 1992


SPRING 1992


WINTER 1992


HIGHEST OBSERVED FREQUENCY PERCENTILE -•■10% ■•- 60% ■*• »0%

|—I PERCENT LINK UJ AVAILABILITY


12 16 20 24 TIME (UTC)

Niei0-&MS[L^<8«J.M04

Figure 177. Exceedance (90%, 50%, and 10%) for Best Frequency, Davis-to-Salisbury Link by Season, 1992 (6-dB Minimum Measured SINAD)

99

N1B10-GMS(L)0880U.M95


HIGHEST OBSERVED FREQUENCY MCMURDO TO CHRISTCHIIRP.H I INK STANDARD METHOD SNR>6dB

AUTUMN 1993


SPRING 1993

WINTER 1993


HIGHEST OBSERVED FREQUENCY PERCENTILE -1-10% -•• 60* ■*■ W%

SUMMER 199311994


MS1&GA.gs<l)08SgU.MW

Figure 179. Exceedance (90%, 50%, and 10%) for Best Frequency, McMurdo-to- Christchurch Link by Season, 1993 (6-dB Minimum Measured SINAD)

100

HIGHEST OBSERVED FREQUENCY MCMURDQ TO DAVIS LINK STANDARD METHOD SAW? > 6 dB

AUTUMN 1992


SPRING 1992


N1B1<M3A4S4l]0«nU.Me7

WINTER 1992


HIGHEST OBSERVED FREQUENCY PERCENT1LE -••10* ■•■ 60% ■*• «0%

I—I PERCENT LINK L~J AVAILABILITY


12 . U

12 16 20 24

TIME (UTC)

Figure 180. Exceedance (90%, 50%, and 10%) for Best Frequency, McMurdo-to-Davis Link by Season, 1992 (6-dB Minimum Measured SINAD)

HIGHEST OBSERVED FREQUENCY MCMURDQ TO DAVIS LINK STANDARD METHOD SNR >6dB

AUTUMN 1993 NUMBER OF SAMPLES PER 4 HOURS (112 MAX)

8 12 16

TIME (UTC)

SPRING 1993


HKäHEST OBSERVED FREQUENCY PERCENTILE ■••10% -+• 60% ■*• »%

|—1 PERCENTLINK ■—' AVAILABILITY

N18io&i95{L)ai8SU Mgg

WINTER 1993


SUMMER 199311994



101

HIGHEST OBSERVED FREQUENCY SALISBURY TO CHRISTCHURCH I INK STANDARD METHOD SNR>6dB

AUTUMN 1993


SPRING 1993 NUMBER OF SAMPLES PER4 HOURS f><2 MAX)

10» . 113 . «6 . M


. 1SI . 13S . t

HK3HE8T OBSERVED FREQUENCY PERCENTILE -»•10% ■*■ 60% •*■ «0%

I—I PERCENT LINK ■—' AVAILABILITY

N181tM3M!HLy)BWU.MW

TIME (UTC)


TIME (UTC)

Figure 182. Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to- Christchurch Link by Season, 1993 (6-dB Minimum Measured SINAD)

HIGHEST OBSERVED FREQUENCY SALISBURY TO CHRISTCHURnH I INK STANDARD METHOD SNR>6dB

AUTUMN 1994



I M I " I " I « I » I 3


30

| 23

° 16

-+- 10O-

HIGHEST OBSERVED FREQUENCY PERCENTILE -•■10% -•- 60% ■*- >0%

TIME (UTC) N1S1»GA-95aiW8eU.M100

TIME (UTC)

SUMMER 199411995



102

HIGHEST OBSERVED FREQUENCY SALISBURY TO DAVIS LINK STANDARD METHOD SNR>6dB

AUTUMN 1992


SPRING 1992


WINTER 1992


HIGHEST OBSERVED FREQUENCY PERCENTILE -•-10% *■ 60% ■*- 90%


N1*1<M3A-95(L)08BSU.M101

Figure 184. Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to-Davis Link by Season, 1992 (6-dB Minimum Measured SINAD)

HIGHEST OBSERVED FREQUENCY SALISBURY TO DAVIS LINK STANDARD METHOD SNR >6dB


114 . 65

TIME (UTC)



«< . 112 . 1

HIGHEST OBSERVED FREQUENCY PERCENTILE ♦ 10% ♦«>%■*■ 90%

TIME (UTC)

TIME (UTC)


N181&GA-95<L)088eU.M102


103

HIGHEST OBSERVED FREQUENCY SALISBURY TO MCMURDQ LINK STANDARD METHOD SNR>6dB

AUTUMN 1992


SPRING 1992


WINTER 1992


HIGHEST OBSERVED FREQUENCY PERC ENTILE *1K ■*■ 6W*-S0%

[—I PERCENT LINK *—' AVAILABILITY

NieiaGA-05<LVS8fiU.M103

SUMMER 199211993 NUMBER OF SAMPLES PER 4 HOURS (I 12 MAX)

100 . HI . 122 . Tl . WO

TIME(UTC)

Figure 186. Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to-McMurdo Link by Season, 1992 (6-dB Minimum Measured SINAD)

HIGHEST OBSERVED FREQUENCY SALISBURY TO MCMURDQ LINK STANDARD METHOD SNR>6dB


WO , 47

TIME (UTC)


, 241 f 260 t 2S1 , 171 , 70 | 20g


. 100 . )05 . I

HIGHEST OBSERVED FREQUENCY PERCENTILE -•-10% — 60% ■*-00%

[—1 PERCENT LINK ■—'AVAILABILITY

N1B1O-GA-0S<l)O8raj.M1«

TIME (UTC)

SUMMER 199311994 NUMBER OF SAMPLES PER4 HOURS (112 MAX)

. no , ne , m , «7 u 1,


104

HIGHEST OBSERVED FREQUENCY SALISBURY TO MHMURDQ LINK STANDARD METHOD SNR>6dB


100 . 120 . i

SPRING 1994 NUMBER OF SAMPLES PER 4 HOURS (1 )2 MAX)

«8 , 212 21S »5 40 . 17S .


114 . 124 a . a . S , 53 ,

HIGHEST OBSERVED FREQUENCY PERC ENTILE ♦ 10* » 60% ■*■ «0*

TIME (UTC)

TIME(UTC)


TIME (UTC)

N1B1O-GA0S<L]O8S9UM1OS

Figure 188. Exceedance (90%, 50%, and 10%) for Best Frequency, Sattsbury-to-McMurdo Link by Season, 1994 (6-dB Minimum Measured SINAD)

HIGHEST OBSERVED FREQUENCY CHRISTCHURCH TO DAVIS LINK STANDARD METHOD SNR >12dB

AUTUMN 1993


SPRING 1993



HIGHEST OBSERVED FREQUENCY PERC ENTILE ♦ 10% ■»■ 60% ■*" om

TIME (UTC)

SUMMER 199311994


N1B1O-GA05{l.]O88SUM

iak

Figure 189. Exceedance (90%, 50%, and 10%) for Best Frequency, Christchurch-to-Davis Link by Season, 1993 (12-dB Minimum Measured SINAD)

105

HIGHEST OBSERVED FREQUENCY CHRISTCHURCH TO MCMIIRnn I INK STANDARD METHOD SNR >12dB

AUTUMN 1993




1»

HIGHEST OBSERVED FREQUENCY PERCENTILE -•-10% — 50% ■*■ SO*

1—1 PERCENT LINK ■—' AVAILABILITY

TIME (UTC)

NI8l(M3^95<L)0aiMt.Mt0T

TIME (UTC)

SUMMER 199311994



HIGHEST OBSERVED FREQUENCY CHRISTCHURCH TO SALISBURY I INK STANDARD METHOD SNR >12dB

AUTUMN 1993



t» I * ,3 | 10


HIGHEST OBSERVED FREQUENCY PERCENTILE -»-10% ■*■ 50% ■*■ W%

f-1 PERCENT LINK ■—' AVAILABILITY

TIME (UTC)

SUMMER 199311994


N1B1(M3A-g5«l)08HU.M108


106

HIGHEST OBSERVED FREQUENCY RAVIS TO CHR1STCHURCH LINK STANDARD METHOD SNR >12dB

AUTUMN 1993


SPRING 1993

WINTER 1993

HIGHEST OBSERVED FREQUENCY PERCENTILE -*• 10% "•- 60% -*- 90%

[—1 PERCENT LINK l—' AVAILABILITY

SUMMER 199311994 NUMBER OF SAMPLES PER 4 HOURS (1 17 MAX)

N181»GA-95<L)0S8«J.M


HIGHEST OBSERVED FREQUENCY DAVIS TO MCMURDO LINK STANDARD METHOD SNR >12dB

AUTUMN 1993


SPRING 1993 NUMBER OF SAMPLES PER 4 HOURS (I« MAX)

_S4_



"■"10% •*- 60% •*• 90%

r—I PERCENT LINK "—' AVAILABILITY

TIME (UTC)


TIME (UTC)

N1B10-GA-B5{L)0fl8«J.M110


107

HIGHEST OBSERVED FREQUENCY DAVIS TO SAI ISBURY LINK STANDARD METHOD SNR >12dB

AUTUMN 1992


SPRING 1992


WINTER 1992



■•-10% — 50% ■*■ «0%

[—I PERCENT LINK "—' AVAILABILITY

N1810-GASSfl.l08MU.M1l1


12 16 20 24

TIME (UTC)


HIGHEST OBSERVED FREQUENCY DAVIS TO SAI ISBURY I INK STANDARD METHOD SNR >12dB

AUTUMN 1993


SPRING 1993 NUMBER OF SAMPLES PER4 HOURS (112MAX)

WINTER 1993


HIGHEST OBSERVED FREQUENCY PERCENTILE -•-10% "•- 60% ■*- «0%

[—I PERCENT LINK l-J AVAILABILITY

6 12 16 20 24 TIME (UTC)

SUMMER 199311994 NUMBER OF SAMPLES PER 4 HOURS (112 MAX]

N181&GA-0Sfl.)0S8gU Mm


108


AUTUMN 1992


SPRING 1992


N1S10-GA«(l]M80UM113

WINTER 1992


HIGHEST OBSERVED FREQUENCY PERCENTILE -•-10% ■•■ »%■*■ »%


I 12 16 20 24

TIME (UTC)



AUTUMN 1993 MUMBEROF SAMPLES PER4HOURS(112MAX)

12 16 20 24

TIME (UTC)

SPRING 1993


HIGHEST OBSERVED FREQUENCY PERCENTILE -•-10% -•" 60% ■*■ 90%

1 AVAILABILITY

N1B^GA45<L)08eeU.M114

WINTER 1993


SUMMER 199311994



109

HIGHEST OBSERVED FREQUENCY SALISBURY TO CHRISTCmiR^H I INK STANDARD METHOD SNR >12dB

AUTUMN 1993



WINTER 1993 NUMBER OF SAMPLES PER 4 HOURS (U2 MAX)

HIGHEST OBSERVED FREQUENCY PERCENTILE -*■ 10% » 50% ■*- «0»

[—1 PERCENT LINK ■—' AVAILABILITY

TIME (UTC)

N1B10-GA4S{L)<ttBfiUM115

TIME (UTC)



HIGHEST OBSERVED FREQUENCY SALISBURY TO CHRISTCHHRHH I INK STANDARD METHOD SNR>12dB

AUTUMN 1994



21 . 2» | g | 16 , » | »


I " I f* I » I f I « I ' i

HIGHEST OBSERVED FREQUENCY PERCENTILE ♦ 10% •*• 60% ■*- «0%

TIME (UTC)

N1S10-GA-B5G.XKHU.M1ie

SUMMER 199411995


T1(KU t a

l 12 16 20 24

TIME (UTC)


110


AUTUMN 1992


SPRING 1992


WINTER 1992


HIGHEST OBSERVED FREQUENCY PERCENTILE -•-10% "•- »%-*■ m

[—1 PERCENTLINK L-' AVAILABILITY


3»

TIME (UTC)

N1B10-GA-85<L]08MUM11T




TIME (UTC)


118 . 51 . 1

WINTER 1993

30

S 16

NUMBER OF SAMPLES PER 4 HOURS (112 MAX) 34 . 114. ST . 2 . 3 . 4 .

100.

* Jo =

HIGHEST OBSERVED FREQUENCY PERCENTILE -•■10% -•-«%**>%

z «;:

TIME (UTC)


_2_

NIS1QGA45{L)Ctt8HJ.M119


111

HIGHEST OBSERVED FREQUENCY SALISBURY TO MCMURDO I INK STANDARD METHOD SNR >12dB

AUTUMN 1992


SPRING 1992


WINTER 1992


HIGHEST OBSERVED FREQUENCY PERCENT1LE -•-10% "•- 60S ■*■ «%

N1BKMSA-0S<l]0OTflU.M1ie

SUMMER 199211993 NUMBER OF SAMPLES PER 4 HOURS (1 12 MAX)

, 44 03 . 135 . 10S . !

TIME (UTC)


HIGHEST OBSERVED FREQUENCY SALISBURY TO MCMURnO I INK STANDARD METHOD SNR >12dB

AUTUMN 1993 mMBER OF SAMPLES PER 4 HOURS (112 MAX)

TIME (UTC)


, M7 , «« , 23S | m t 46 , 1,


-t- 30

I" I 16

100,

»5 I

110

HIGHEST OBSERVED FREQUENCY PERCENTILE ■•■10% "•- 60% ■*• 00%

l—l PERCENT LINK ■—' AVAILABILITY

TIME (UTC)


, 102 , 130 | 2« | 1SS [ 11 | 04 |

5 «I

100. &

N1810-GA-K(L)088gUM12t

Figi/re 20 J. Exceedance (90%, 50%, and 10%) for Best Frequency, Salisbury-to-McMurdo Link by Season, 1993 (12-dB Minimum Measured SINAD)

112

HIGHEST OBSERVED FREQUENCY SALISBURY TO MCMURDO LINK STANDARD METHOD SNR >12dB

AUTUMN 1994


SPRING 1994 NUMBER OF SAMPLES PER 4 HOURS (112 MAXI

WINTER 1994


HIGHEST OBSERVED FREQUENCY PERCENTILE ♦ 10% —SO*-* SO%

I—| PERCENT LINK "—' AVAILABILITY

TIME (UTC)


> , ri , g , 25 , n .

N1S10-QA-es{L)0889U.M


HIGHEST OBSERVED FREQUENCY CHRISTCHURCH TO MCMURDO LINK STANDARD METHOD SNR > 18 dB

AUTUMN 1993



58 . S3 , 36 . 1S , 19 ■ 57 ,


41 . 65 . X . 17 . 7 . 34 ,


■»-10% ■*■ 60% ■*■ 90%

1 AVAILABILITY

12 16 20 24

TIME (UTC)

Niei0-GA-S5<l]0S89UM122

SUMMER 199311994


12 16 20 24

TIME (UTC)


113

HIGHEST OBSERVED FREQUENCY CHRISTCHURdH TO SAI ISRURY I INK STANDARD METHOD SNR >18dB

AUTUMN 1993


SPRING 1993


N18KM3^«KL)0am).M123


U ■ 4 . » 11 . 10 . 17


-»"10% -*■ 60% ■*■ W%

|—] PERCENT LINK '—' AVAILABILITY

12 16 20 24

TIME (UTC)

SUMMER 199311994



HIGHEST OBSERVED FREQUENCY DAVIS TO CHRISTCHLJRHH I INK STANDARD METHOD SNR >18dB

AUTUMN 1993


SPRING 1993


WINTER 1993


HIGHEST OBSERVED FREQUENCY PERCENTILE -•■10% 1- 60% ■*- »0%

N1B10-GA-95«IXI88SUM124


I ' I * I W | 4 , , , . ,

10<L. &

0 4 8 12 16 20 24 TIME (UTC)


114

HIGHEST OBSERVED FREQUENCY DAVIS TO MCMLJRDO LINK STANDARD METHOD SNR >18dB

AUTUMN 1993


SPRING 1993 NUMBER OF SAMPLES PER 4 HOURS (1 12 MAX)

145 . 121 . 7S . 54 . SO .


HIGHEST OBSERVED FREQUENCY PERC ENTILE • IB ■•-»%■*■ «1%

I—1 PERCENT LINK "—' AVAILABILITY

TIME (UTC)


N181(M3^95{L)0SSW M13S


HIGHEST OBSERVED FREQUENCY DAVIS TO SALISBURY LINK STANDARD METHOD SNR >18dB

AUTUMN 1993



I ' I '? I " I 3 I ' I 7 I

WINTER 1993


HIGHEST OBSERVED FREQUENCY PERCENTILE -•-10% ■»■ 50% ■*■ M%

12 10 20 24 TIME (UTC)

SUMMER 199311994


N1S1<M3A-g5<L)08OTU.M12a


115

HIGHEST OBSERVED FREQUENCY MCMURDO TO nAVlS I INK STANDARD METHOD SNR >18dB

AUTUMN 1992


SPRING 1992


WINTER 1992


HIGHEST OBSERVED FREQUENCY PERCENTILE -•■10% »ant-*- «0%

1—1 PERCENTLINK ■—' AVAILABILITY

N1S10.GA«S<L]Oe8«J M12T

SUMMER 199211993 NUMBER OF SAUPLES PER i HOURS ft UMAX)

7 . S . S . 10 -t——i—-—y

l'6,^ 1 1 1 Uo I 12 16 20 24

TIME (UTC)


HIGHEST OBSERVED FREQUENCY MCMURDO TO DAVIS LINK STANDARD METHOD SNR > 18 dB


TIME (UTC)

SPRING 1993


WINTER 1993


HIGHEST OBSERVED FREQUENCY PERCENTILE -•■10% •»■ 60% ■*- S0%

SUMMER 199311994


N1B10-GA«i(L)0G8SU.M12S


116

HIGHEST OBSERVED FREQUENCY SALISBURY TO CHRISTCHURCH LINK STANDARD METHOD SNR >18dB

AUTUMN 1993


SPRING 1993 NUMBER OF SAMPLES PER 4 HOURS {112 MAX)


HIGHEST OBSERVED FREQUENCY PERC ENTILE -•■10% ■•- 50% ^*- 90%

1—1 PERCENT LINK *—' AVAILABILITY

12 16 20 24

TIME (UTC)

9 12 16 20

TIME (UTC)

SUMMER 199311994


N1B1»GA-es«LX>B8eUM120


HIGHEST OBSERVED FREQUENCY SALISBURY TO CHRISTCHURCH LINK STANDARD METHOD SNR >18dB

AUTUMN 1994



HIGHEST OBSERVED FREQUENCY PERCENTILE -»-10% ■*■«>% ■*■ 90%

1—1 PERCENT LINK "—' AVAILABILITY

N181&GA-954l)088SUM13a

WINTER 1994


SUMMER 199411995



117

HIGHEST OBSERVED FREQUENCY SALISBURY TO nAVIS I INK STANDARD METHOD SNR >18dB

AUTUMN 1992


SPRING 1992


rmi[MS>ws<L)oawu.Mm

WINTER 1992


HIGHEST OBSERVED FREQUENCY PERCENTILE -•■10» — SO» ■*- SO* l—I PERCENT LINK ■—' AVAILABILITY


I ' I " I » I « | » | « | 10O.

&

-H 1 h- > 12 16 20 24

TIME (UTC)


HIGHEST OBSERVED FREQUENCY SALISBURY TO DAVIS LINK STANDARD METHOD SNR >1SdB

AUTUMN 1993


SPRING 1993 NUMBER OF SAMPLES PER4 HOURS (112MAX)

12 . 30 . 62 , 71 , » , n

HIGHEST OBSERVED FREQUENCY PERCENTILE -•■10» — 50» ■*- to»

[—] PERCENT LINK ■—' AVAILABILITY

ä 3 ff fc

I '« I T10(L

& t

r°'^^^^4 12 16 20 24

TIME (UTC)

N1810-GA-B5(L)08B9U M132

WINTER 1993


SUMMER 199311994



118

HIGHEST OBSERVED FREQUENCY SALISBURY TO MCMURDO LINK STANDARD METHOD SNR > 18dB

AUTUMN 1992


SPRING 1992


WINTER 1992


HIGHEST OBSERVED FREQUENCY PERCENTILE -•-10% ■*■ 60% ■*-S0%

SUMMER 199211993 NUMBER OF SAMPLES PER 4 HOURS (112 MAX]

TIME (UTC)

N1810-GAOS<l]08MUM133


HIGHEST OBSERVED FREQUENCY SALISBURY TO MCMURDQ LINK STANDARD METHOD SNR >18dB

AUTUMN 1993

30

I" P 18


TIME (UTC)


136 . tS . 21 . 21

WINTER 1993


HIGHEST OBSERVED FREQUENCY PERCENTILE -•■10% — 60% ■*- »0%


141 . 127 . 29

i I«

N131D-QA-05{L)0eS9U.M134


119

HIGHEST OBSERVED FREQUENCY SALISBURY TO MCMURnO I INK STANDARD METHOD SNR >18dB

AUTUMN 1994



» . «» . 62 . W . M -t—■ 1 ■" I '" I

HIGHEST OBSERVED FREQUENCY PER0ENT1LE -•■10» »■ 60» ■*■ W%

§ "^lîfe^«

12 16 20 24 TIME (UTC)

N1B1CkGA05<L)O8aflUM13S

WINTER 1994


SUMMER 199411995



120

CHRISTCHURCH TO DAVIS 1993

- NO DATA AVAILABLE - -- NO DATA AVAILABLE -

~ 100T % 90 g 80 8 *>■ r 60 5 50 « 40. 3 30 > 20 * 10 k

V VINT

I ER

I, 1, II t - NO DATA AVAILABLE -

0 4 8 12 16 20 24 HOUR BIN

D NO FREQ AVAIL. ■ % OF 11-15 MHz AVAIL. □ % OF 5-9 MHz AVAIL. D % OF 18-25 MHz AVAIL.

1994


■■ NO DATA AVAILABLE - - NO DATA AVAILABLE ■■

N1810-GA-95(L)0524U.M66

Figure 219. Circuit Availability by Season, Christchurch to Davis, 1993-1994

121



WINTER

4 8 12 16 20 24 HOUR BIN


100T 90.. 80. 70. SO. 50. 40. 30. 20. 10. 0. i

SPRING

4 8 12 16 HOUR BIN

D NO FREQ AVAIL. H % OF 11-15 MHz AVAIL. B % OF 5-9 MHz AVAIL. El % OF 18-25 MHz AVAIL.

1224

-- NO DATA AVAILABLE ■■

100. « 90. in 80. g 70. & 60. e so. i 40- 3 30. i 20.

WINTER

jM i 0 4 8 12 16 20 24

-- NO DATA AVAILABLE


N1810-G A-95(L)0524U.M67

Figure 220. Circuit Availability by Season, Christchurch to McMurdo, 1993-1994

122

CHRISTCHURCH TO SALISBURY 1993

- HO DATA AVAILABLE - - NO DATA AVAILABLE -

s I°°T WINTER s- 100T SPRWG «i 90. «1 so.

S 80. S 80. 8 70. i 7°- f 60. a 60. > r ■ i ■ | 50. w L J ?] p bj 50. i 1 1 E 40. ■ 1 " 1 <■ l: n 40. 1 1 i 3 30 > 20

; io. i i i fl i\ fl. rif. 3 30. > 20. ; io.

I

HI. i. !.[ 11. 1 0 4 8 12 16 20 24 0 4 8 12 16 20 24

HOUR BIN HOUR BIN

□ NO FREQ AVAIL. ■ % OF 11-15 MHz AVAIL

13 % OF 5-9 MHz AVAIL. □ % OF 18-25 MHz AVAIL

1994

- NO DATA AVAILABLE « - NO DATA AVAILABLE -

100

« 90- WINTER _ 100T

« 90. SPRING

ui 80. n n S 80. o 70. ! § 70' S 60. ; - «• so. t 50. - i 1 „ t 50.

1 >° pi _ ■ ■ 5 _ 5 40. 1 ■ >L 3 30. L 1 r ' 1 1 L 3 30. I ■ nl 1 j 20. < 10. * 0 1 h\ .\ I i > 20.

J io. fl. L i 1 ti 0 4 8 12 16 20 24 0 4 8 12 16 20 24

HOUR BIN HOUR BIN

N1810-GA-95(L)0524U.M68

Figure 221. Circuit Availability by Season, Christchurch to Salisbury, 1993-1994

123

DAVIS TO CHRISTCHURCH 1993

- NO DATA AVAILABLE

WINTER

ki 4 8 12 18 20 24 HOUR BIN

-- NO DATA AVAILABLE

100. 90. 80. 70.. 60. SO. 40. 30. 20. 10.

SPRING

nlln 4 8 12 16 20 24 HOUR BIN

D NO FREQ AVAIL. ■ % OF 11-15 MHz AVAIL. B % OF 5-9 MHz AVAIL. El % OF 18-25 MHz AVAIL.

1324

- NO DATA AVAILABLE ~ - NO DATA AVAILABLE -


N1810-G A-95(L)0524U.M69

Figure 222. Circuit Availability by Season, Davis to Christchurch, 1993-1994

124


- NO DATA AVAILABLE

iooT

« 90

iu 80.. g 70.. % 60.. t 50. £ *° 3 30.. 5 20. S io. * o..

WINTER

LII li ii ■ ri I 0 4 8 12 16 20 24 HOUR BIN


SPRING

M 4 8 12 16 20 24

HOUR BIN

D NO FREQ AVAIL. ■% OF 11-15 MHz AVAIL. □ % OF 5-9 MHz AVAIL. B % OF 18-25 MHz AVAIL.

1994 100.

° 90. £ 80. o 70. £ 60. E 50. i 40. 3 30. 5 20.

5 1o° I S

il urn

II 1ER

II II II 1 - NO DATA AVAILABLE -

0 4 8 12 16 20 24 HOUR BIN


N1810-GA-95(L)0524U.M70

Figure 223. Circuit Availability by Season, Davis to McMurdo, 1993-1994

125

DAVIS TO SALISBURY 1993

- NO DATA AVAILABLE

s- iooT FALL Al SHI. tu 80. o ft 70.

60 £ 50. ' n a> 40. n { b 30. | j i > 20. 1 • 1 * 10.

0 1 ,n -.n Hi, 1 0 4 8 12 16 20 24 HOUR BIN

□ NO FREQ AVAIL. ■ % OF 11-15 MHz AVAIL. El % OF 5-9 MHz AVAIL. El % OF 18-25 MHz AVAIL.

im SUMMER

4 8 12 16 20 24 HOUR BIN

-- NO DATA AVAILABLE -

NO DATA AVAILABLE ■

- NO DATA AVAILABLE

N1810-G A-95(L)0524U.M71

Figure 224. Circuit Availability by Season, Davis to Salisbury, 1993-1994

126

SALISBURY TO CHRISTCHURCH 1993

- NO DATA AVAILABLE

WINTER

I I 0 4 8 12 16 20 24

HOUR BIN

- NO DATA AVAILABLE

1°°T SPRING 90..

12 16 20 24 HOUR BIN

D NO FREQ AVAIL. □ % OF 5-9 MHz AVAIL.

B % OF 11-15 MHz AVAIL. 0 % OF 18-25 MHz AVAIL.

ISM & 10°- «I 90. g SO. I 70. a 60. fc 50. i 40. 3 30. i 20. ; io.

0.

SUMMER

lUlUiJiLI 0 4 8 12 16 20 HOUR BIN

- 1!£T WINTER Z 90..

4 8 12 16 20 HOUR BIN

- NO DATA AVAILABLE

N1810-GA-95(L)0524U.M72

Figure 225. Circuit Availability by Season, Salisbury to Christchurch, 1993-1994

127

SALISBURY TO DAVIS 1993


s- 10ai AI 90. £ 80. 8 70. | 60. 5 50. 3 40. 3 30. S 20. 3 10.

0. II Jll

FALL

1 1. 0 4 8 12 16 20 24

HOUR BIN

e 10°T Ai 90 s so 8 70. | 60.

WIN) f£R S- 100T « 90. ä so. 8 70. a 60. | 50.

SPRING

3 30. S 20 / 10.

0. Y I 1 l , i. i. 1 0 40. 3 30. S 20. * 10. U 1 1 I 11

0 4 8 12 16 20 24 0 4 8 12 16 20 24 HOUR BIN HOUR BIN

D NO FREQ AVAIL. ■ % OF 11-15 MHz AVAIL Q % OF 5-9 MHz AVAIL. El % OF 18-25 MHz AVAIL

1994 S 100T AI 90. £ 80.

SUMMER

8 70. | 60. Ej 50.

n

3 30 > 20. ; io.

0. I i I A I -- NO DATA AVAILABLE -

0 4 8 12 16 20 24 HOUR BIN


N1810-GA-95(L)0524U.M73

Figure 226. Circuit Availability by Season, Salisbury to McMurdo, 1993-1994

128


- NO DATA AVAILABLE

s 100. « 90. £ 80. 8 70. - 60. 5 so. S 40. 3 30. > 20. ; io.

0.

1994

WINTER

I i J 0 4 8 12 16 20 24

HOUR BIN

_ 100. ° 90. £ 80. 8 70. a 60. E SO. 5 40. 3 30. 5 20. ; io.

0.

FALL

JÜ 0 4 8 12 16 20 24 HOUR BIN

_ 100. ° 90. £ 80. 8 70. a 60. E so. i 40. 3 30. 3 20. S io-

0.

SPRING

I nlrJt II Ji,flJLnl 0 4 8 12 16 20 24

HOUR BIN

D NO FREQ AVAIL. ■% OF 11-15 MHz AVAIL. □ % OF 5-9 MHz AVAIL. □ % OF 18-25 MHz AVAIL.

4 8 12 16 HOUR BIN

FALL

N1810-GA-95(L)0524U.M74

Figure 227. Circuit Availability by Season, Salisbury to Davis, 1993-1994

129

|OArea=klog(Counl)

30 -

25 -

20- m ■o D

i

s s s

0 0 OOJ oo] o at

-jj 0 OO

1 I o

"r 0 0 0

0 o

2! * cz 0 I

5 * * o € • 0 (?

0

*3E«P JSg^Pg 1

1 0 > n

8 0

c 0

o o

> o > o

0

O o 0 0

c 0 0 •

O <! 0 t

6 Ci

y ° a • » '

0-

( . . « . «1 f* V\/"SL^/-4 .. - ) 5 10 15 20 25 30

Received SINAD, dB

Figure 228. Link Symmetry for All Links, 1993-1994

30

25

20 o ■o a" < B 15 I a

3 a 10

5-

|ÖArsa=k log(Count) |

*yn>f^>r^r\Ä r\ * ^ 10 15

Received SINAD, dB

20 25 30

Figure 229. Link Symmetry, Salisbury to McMurdo, 0000-0400 UT

130

|OArea=klog(Count) |

30-

25

20

10-

A\r%r^r\r\r\r\r\ r* r\ A 10 15

Received SINAD, dB

25


|OAraa=k log(Gount) |

25

20-

15-

/^/"X/nt/Ov/v^^ AA A 10 15

Received SINAD, dB

20 25 30


131

30 -

25

15-

10 —

|OArea=klog(Count) [

o ° ° ° o-

^ 4, /-* r\/"\s^r%/~\ /-* - n 1

Received SINAD, dB


30-

25-

15-

10

|OArea=k log(Count)

-r\r\r\r\/\r%r\ d O £. 10

o o o 0O0

-0—0

000

o o

-O o-

20 25

Received SINAD, dB 30


132

|OArea=klog(Counl)|

" 15-

o O 9

Q ooo

o o o o

r\r^r\r\r\r^ ^ r\ ~ k 10 15

Received SINAD, dB

20


20-

15

[ÖÄrea=k log(Count) |

lAQAZÜ

-o

10 15 20

Received SINAD, dB

25

Figure 235. Link Symmetry, Salisbury to Christchurch, 0000-0400 UT

133

|OArea=klog(Count)

30

25

Q < Z » 15 £

a

10

0 0 0 0

0 0

o QQC o

)©8o

jM Q Q o (

o

i

O

o

!

3|lQfcâL <

0 ^^^»aSr^f

\ ^ 25

Received SINAO, dB


25

20

1 I

|OAraa=klog(Count)

A*r^<i"\ /■> .. A

-o-

15

Received SINAD, dB

20 25 30


134

p Area=k log(Count) |

25

\J

1 o 90„ 9

o ( O Q Q Q Q o

o

c II» #0 ' o

0

° O c

v2? 0 Ö

^

\^p

20

Q 2

15

10 15

Received SINAD, dB

20 30


O Area=K iog(Count) |

25

3

_C* a_A,_Ä

o o

-£- -Q-

10 15 20

Received SINAD, dB

25 30


135

|OArea=klog(Count)|

30 -,

25-

20- o ■o

| 15-

3

0

9 ° 0 O

s s 10 -

5-

< > 0 0 Q f |QQ§0 9

IXAQ ° € *aLJG % o ° «I ̂

8 d

o \j

0 f \ n r>> f~\ r\ r

c ; 10 15 20 25 30 Received SINAD, dB


25

20 £0

f 2 15

|OAraa=ktog(Count) |

o o o o o

„__ o 0 __

O 0

i O O O ■ . ,

a A

o

o O

10 15

Received SINAD, dB

20 25

Figure 241. Link Symmetry, Davis to McMurdo, 0000-0400 UT

136

30

25

z 5 15

[o >â=kJog(Countj ]

—■ p—v v—w—Y—\s—*—»-*—v-/—y—v^\^/ w www \i^

o e ■ o

<» 0

o a 0 M

o O o o O o o n 0

O

O e O O ii O °

T ° O o— Q—<>——o 0 o

A 0 O «

o

10 15

Received SINAD, dB

25 30


30

20

s z 55 15

1

10

|OArea=klog(Count) j

^ w

6 o •

• O <

1 O (

O e ( > o o O o <

> • o i o • 1 0 o > O

O

0

0 o 0 ( © o o

• 0 O ° <

> 0 0 o < o O *

) 0 o

1 0

< 0 o 0 0 o e

) « o 0

10 15

Received SINAD, dB

20 25 30


137

9 z m ■a e

1 s

[ÖArea=k log(CounQ]

?■) -

- w w K, \* w WfXaä«^

?n - o A

1S -

o

0 0 o <

0

a o

0

1

in

ft 0 * ) «00

ft o « o 0

.■>• i

0 0 0

0 8

0-

15

ftecelvad SINAD, dB

20 25 30

F/£«re 244. Z/nJfc Symmetry, Davis to McMurdo, 1600-2000 UT


138

OArea=k log(Count)

30 -r

2b -

o oo(

O o j o 0 o

o O o <

Mo j

6° °

#4^ r o

n- r\An r\r k r\ 15

Received SINAD, dB

30

Figure 246. Link Symmetry, Salisbury to Davis, 0000-0400 UT

20

OArea=k log(Count)

~\^~

: s 10

o O o

O 0 O O Q O O O O O O <? o o O <> o

O o-

n nAAf'SriAri n—|—o.

10 15

Received SINAD, dB

20 25 30


139

30-

25-

20-

15 -

10-

30 -

25-

10-

|OArea=klog(Count)]

o

o o O o o o

-"-\iftjn*

o -o—o—o-

QoQo (^(^ O

AAAA1AA> A . 5 10 15

Received SINAD, dB

0 0 CM O o O <

-o-

20 25


|OArea=ktog(Count)J

O O -§- O O O o O O

o-^-o-o4

o $ O O O

o o o o o

r^ r\.r\-

o o

o o o o

o o

10 15 20

Received SINAD, dB 30


140

30

25

20

» 15 I

10

[OArea=k log(Count)|

O O t O p

/-\ AAAAA^

0

o o o

-O—o o-

o o

0 o o

16 20

Received SINAD, dB


[ÖArea=k log(Countf|

o { o <

O -

o O O

3

o

o

jyOo o jpg» ° •yd? o o c

o 0

) o

*"* ^ r\

» 15 I

10

15 20

Received SINAD, dB

30


141

30

25

CD 20 ■D

a" $ <5 15 ■D

s 1 K 10

|OArea=k log(Count) [

8 •8

o -o-

o • o

•9 o ••••oO-ooaax

<<(((«i<C{({((i<i!fiiiiiiiiii<(ia((««?a »Ö

oo •OS

• OO

■-O

>0«O Oo«00* 0 O o(

20 40 60

Channel Score

SO 100 120

Figure 252. Received SINAD vs. Channel Score

30

25

CO 20

«2 15 s 3 I» n d> E 10

[oArea=k log(Count) ]

0*03 0 -oo-oaQO-O-

O>0 GQO> OOOoQOODQ «i!5i«<«i<»«iSÄ!Sl«'C<««.M««»

«■*«««( c<((c<«<*<(«(«!!««««<«:t'*<«*>

a><nmini TOBim »»MM*

anmm » ViW

20 40 60

Channel Score

80 100 120

Figure 253. Measured SINAD vs. Channel Score

142

INITIAL DISTRIBUTION LIST

Addressee No. of Copies

National Science Foundation, Office of Polar Programs 6 Office of Naval Research (ONR 313) 2 Defense Technical Information Center 6 Tele-Technologies, Inc. (Robert Pellowski) 1 Joseph Katan 3 John Tillbrook 1

INITIAL DISTRIBUTION LIST

Addressee No. of Copies

National Science Foundation, Office of Polar Programs 6 Office of Naval Research (ONR 313) 2 Defense Technical Information Center 6 Tele-Technologies, Inc. (Robert Pellowski) 1 Joseph Katan 3 John Tillbrook 1

Documents

Seasonal Performance of a High-Frequency/ Automatic Link