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: centre@ucrf.gov.ua