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8/13/2019 ITU Rain Map Information
http://slidepdf.com/reader/full/itu-rain-map-information 2/5
Page 12 of 14
Rain Attenuation Pathloss 4.0
Figure 3: Crane World Rain Regions
8/13/2019 ITU Rain Map Information
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Pathloss 4.0 Rain Attenuation
Page 13 of 14
Figure 4: Modified Crane (1996) World Rain Regions
8/13/2019 ITU Rain Map Information
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Page 14 of 14
Rain Attenuation Pathloss 4.0
REFERENCES
1. Prediction of Attenuation by Rain - Robert K. Crane
IEEE Transactions on Communications
VOL. COM-28 NO 9, September 1980
2. Characteristics of Precipitation for Propagation Modeling
Recommendation ITU-R Pn.837-1
3. High Intensity Rainfall Statistics for Canada - B. Segal
Communications Research Centre, Department of Communications
Ottawa Canada CRC Report Number 1329-E
4.4 Electromagnetic Wave Propagation through Rain - Robert K. Crane
A Wiley Interscience Publication
John Wiley & Sons Inc. (1996)
5. Propagation Data and Prediction Methods Required for the Design of Terrestrial Line of Sight
Systems - ITU Recommendation P.530-7
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Pathloss 4.0 Passive Repeaters
i
PASSIVE REPEATERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
OVERVIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Path Profiles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Creating a Passive Repeater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Editing Passive Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Propagation Reliability Calculations on Passive Repeaters . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Passive Reports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Comparison of Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
RECTANGULAR PASSIVE GAIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
NEAR FIELD LOSS - GAIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
CLOSE COUPLING LOSS - DOUBLE PASSIVES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
REFERENCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10