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Designation of the station -Measuring parameters of satellite stations emissions in the frequency bands C (from 3,4 to 4,2 GHz) and Ku (from 10,7 to 12,75 GHz); - Earth stations location (geolocation) in the above mentioned frequency bands.
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Earth stations radio monitoring system of Ukraine
Ukrainian State Centre of Radio Frequencies
Space Radio Monitoring Station
Space radio monitoring station (with geolocation function)
Designation of the station
- Measuring parameters of satellite stations emissions in the frequency bands C (from 3,4 to 4,2 GHz) and Ku (from 10,7 to 12,75 GHz);
- Earth stations location (geolocation) in the above mentioned frequency bands.
Station capabilities
Earth Stations in the UCRF affiliates
Одеса
Симферополь
Миколаїв
Дніпропетровськ
Донецьк
Харків
Запоріжжя
Кіровоград
Луганськ
Севастополь
ЛуцькРівне Житомир
УжгородІв.-Франківськ
Чернівці
ТернопільХмельницький
Вінниця
ПолтаваЧеркаси
Чернігів
Суми
Херсон
Київ
296
8266
999138
67270
12331
8726 112
12186
141274
196
74107
131170
214
49
Львів
63
82
Total number of earth stations in Ukraine – 3276 as of 01 July, 2013
• Compass – used for diagnostics, control over GeoMon terrestrial equipment and antenna pointing to satellites.
• Monics – used for measuring the earth stations emission parameters, satellite stations carrier frequencies and for maintenance the Monics data base.
• Sat ID – used for geolocation of earth stations and calculation of satellite ephemerides.
• Radiofrequency facilities – satellite antennas and electronic facilities to receive satellite signals for further measurement.
The System Structure
Аntenna 2Secondary
Antenna 1Primary
Parameter Antenna 1 (Primary) Antenna 2 (Secondary)
Antenna type Cassegrain Antenna Cassegrain Antenna
Antenna size, m 7,3 m 7,3 m
Frequency band C/Ku C/Ku
Коефіцієнт підсилення, дБ 49,73/58,41 49,50/58,84
Polarization Circular/Linear Circular/Linear
Azimuth travel 120° 120°
Elevation travel 0-90° 0-90°
Rotation angle on polarization + 90° + 90°
Hardware system frequencymonitoring
Control System Compass
Program Interface Monics
Parameter Unit Parameter variants
Modulation type - BPSK, QPSK, 8PSK, OQPSK, 16QAM, 16APSK, 32APSK, CW, MSK
Symbol rate KBS
Central frequency MHz
Effective isotropic radiated power (e.i.r.p.) dBW
Bandwidth kHz
Carrier-to-noise ratio (C/No) dB-Hz
Energy per bit to noise power spectral density ratio (Eb/No) dB
Energy per symbol per noise power spectral density (Es/No) dB
Data rate KBS
Bit error rate -
Carrier standard - DVB-S, DVB-S2, IESS-308,IESS-309, IESS-310, IESS-315
Forward error correction - 1/2, 2/3, 2/5, 3/4, 3/5, 30, 4/5, 5/6, 7/8, 8/9, 9/10
Earth station main measuring parameters
Main lobe
Side lobe Side lobe
Earth station
C+-10o
-uK +8o
Conditions for successful geolocation
Earth Stations System GeoMon
N
E
S
Different travel paths allow to measure differential time offset (DTO)
Different velocities of satellites allow to measure differential frequency offset (DFO)
W
Geolocation principleEarth station geolocation scenario
Potential accuracy of earth station geolocation
Digital map and ellipse with the target earth transmitting station
Illustration of geolocation case
Possibilities for geolocation
Geolocation is possible when TDOA and FDOA lines intersect
Geolocation is impossible when TDOA and FDOA lines do not intersect
Conditions necessary for geolocation
Required:• angular distance < 10° (С band) and < 8° (Ku band);• intersecting service arias (оn uplink);• the same uplink frequency;• the same polarization;• downlink footprint shall cover receiving station;• known reference station.
Recommended:• precise ephemerides (more accurate than Norad TLE);• minimum 3 reference transmitting stations;• usage of the best time for measurements.
Mobile radio monitoring stations operating in the frequency range from
3 GHz to 40 GHz are used for detection of interference sources.
Footprints of which have national administration communicationto measure the radiation of space stations
Thank you for attention
Contact details: Ukrainian State Centre of Radio FrequenciesPr. Peremogy, 15 km 03179 KyivUkraineFax: +38 044 422 81 81 E-mail: [email protected]