“Grif” Direction-Finding and RES Signals Technical Analysis Station

“Grif” Direction-Finding and RES Signals Technical Analysis Station


- automatic search, detection, determination of bearing and coordinates of the radio sources (when operating in a mated pair), technical analysis of ground and aerial VHF/UHF fixed-frequency and frequency-hopping (with up to 1000 hops-per-second rate in 30 MHz band) radio emissions;
- reception and decoding of “Mode S” aerial platform identification signals, display of trajectories of aerial platforms emitting “Mode S” signals;

The main capabilities:

- Search, detection and direction-finding of new RES within the assigned parts of the 30-3000 MHz frequency band.
- Measurement of parameters of the detected RES signals.

- Monitoring operation of the known RES and those assigned for watching.
- Detection of fixed-frequency and frequency-hopping RES by the frequency/DF panorama.
- Automated monitoring of RES operation.
- Generation and transmission of the reports on monitoring and reconnaissance results to the control post.
- Registration of signals at the output of the monitoring acoustic receiver.
- Technical analysis of the RES signals. 
- Determination of RES coordinates with imaging on E-map when two stations operate in a pair.
- Control of parameters and operation modes, data acquisition from the slave stations.
- Automated data processing and documenting.

Main technical characteristics:

No   Characteristics   Value
 1.   Working frequency range  30-3000 MHz
 2.   Panoramic analysis rate  min 9 GHz/s
 3.   Panoramic spectrum analysis band observed  simultaneously   150 MHz
 4.   DF scan rate   minimum  0.5 GHz/s
 5.   RMSE of direction-finding, maximum   not less than 2º
 6.   Types of modulation   АМ, FM, SSB, CW, WFM
 7.   Working angle sector  0º-360º
 8.   Frequency hopping communication radio  reconnaissance capability, maximum hops/s   1000 
 9.   Radio receiving device frequency tuning step in  technical analysis mode, minimum  1Hz
10.   Power supply   Single-phase mains 230 V, 50 Hz  and three-phase 380 V, 
 50 Hz
11.   Working temperature range for outdoor equipment  From minus 30 to plus 50 ºC
12.   Working temperature range for sheltered equipment   From plus 0 to plus 40 ºC