ASR-910
The ASR-910 is a remote-controlled 2D air traffic control radar device ( Airport Surveillance Radar ) used on airfields . It has been used as a primary radar on military airfields by the army, air force and navy since 1979 and is still currently in Germany . The ASR-910 is a stationary radar device developed according to German specifications from the American mobile radar device AN / TPN-24 from the Raytheon Company . Modified (other viewing devices) it was also used earlier in the Netherlands. The system consists of an antenna, waveguide, shelter, two viewing devices in the approach and control area, as well as an IFF system ( friend-foe recognition ). It cannot be networked and is installed on special tower structures to improve the detection area.
The ASR-910 gives the air traffic controller an overview of the aircraft in the vicinity of the airfield. An integrated secondary radar device provides additional information on request, such as flight number and altitude. The air situation is transmitted to the approach control room and can be displayed on several viewing devices. The ASR-910 works with two time-staggered transmission pulses (frequency diversity) with a frequency spacing of approx. 72 MHz in the E-band .
The ASR-910 is currently being replaced by the more modern ASR-S on German airfields. In 2016 the last air base ( Nörvenich ) will get the new equipment.
| Technical data ASR-910 | |
|---|---|
| Frequency range | 2.7-2.9 GHz |
| Pulse repetition time | 952.5 µs (Ø) |
| Pulse repetition frequency | 1050 Hz (staggered) |
| Transmission time (PW) | 2 times 1 µs each |
| Reception time | 800 µs (≈ 60 NM ) |
| Dead time | ... |
| Pulse power | 2 times 500 kW each |
| Average performance | 2 times 525 W each |
| displayed distance | up to 110 km (60 nautical miles) |
| Distance resolution | 150 m |
| Opening angle | 1.55 ° |
| Hit count | > 20 |
| Antenna round trip time | 4.2 s |
Publications
- Manual of the German Armed Forces and the Defense Industry, air traffic control device, p.480 . Sadlowski, Bernard & Graefe, Bonn 2007, ISBN 978-3-7637-6276-7 .