P-37
The centimeter- wave radar station P-37 Drenasch ( Russian П-37 Дренаж , NATO code : Bar Lock ) was a Soviet -made panoramic station and was taken over from the former NVA in the air defense of the Federal Republic of Germany. For this purpose, it was equipped with a new secondary radar (Siemens 1990-D1 / D9) and was in service until May 15, 1998, when the last device on Rügen was switched off. The radar was used for air reconnaissance and fighter control.
The pulse radar worked on five different fixed frequencies between 2.7 and 3.3 GHz with a pulse power of 700 kW each. It could be connected to the automated system "Arkona" , a forerunner of digital target data processing. The range was about 450 km. The five different frequencies, which were also transmitted in different directions by the antennas with a fan diagram , made it possible to roughly determine the elevation angle. It was possible to send and receive linearly and circularly polarized . In a system for the selection of moving targets (SBZ system), interference from fixed targets ( clutter ) was suppressed with the aid of the Doppler frequency .
The radar station was operated together with mobile radio altimeters of the type PRW-11 or PRW-13 .
construction
The system consisted of:
- a Tatra 813 towing vehicle
- a Tatra 148 towing vehicle
- a ZIL-157 display vehicle
- an antenna trailer
- two units GAD-60
- an apparatus trailer (S / E cabin)
- an apparatus trailer (trailer 8 - interference protection)
| Technical data P-37 "Bar Lock" | |
|---|---|
| Frequency range | 2.9-3.3 GHz |
| Pulse repetition time | 2.6 and 1.3 ms |
| Pulse repetition frequency | 375 and 750 Hz |
| Transmission time (PW) | 1.2 µs |
| Reception time | |
| Dead time | |
| Pulse power | 5 times 700 kW each |
| Average performance | 5 times 700 W each |
| displayed distance | up to 450 km |
| Distance resolution | 180 m |
| Opening angle | 2 ° |
| Hit count | > 8 |
| Antenna round trip time | 10 s |
Web links
Individual evidence
- ↑ Joachim Hoffmann (ed.): JBG-37 - Chronicle of a Fighter Bomb Air Wing 1971-1990. Reinhard Semmler, Cottbus 2019, ISBN 978-3-935826-01-3 , p. 212.