ASR 5
Description of the radar set, tactical-technical characteristics
Figure 1: ASR 5
| Specifications | |
|---|---|
| frequency: | 2 700 … 2 900 MHz
(S-Band) |
| pulse repetition time (PRT): | |
| pulse repetition frequency (PRF): | 710 … 1 200 Hz |
| pulsewidth (τ): | 0.833 µs |
| receive time: | |
| dead time: | |
| peak power: | 425 kW |
| average power: | 380 W |
| instrumented range: | 60 NM (≙ 111 km) |
| range resolution: | 187 m |
| accuracy: | ± 2% |
| beamwidth: | 1.5° |
| hits per scan: | |
| antenna rotation: | 15 rpm |
| MTBCF: | |
| MTTR: | |
ASR 5
The ASR 5 was a pulse-modulated S-Band terminal area surveillance radar. The radar utilized a 5.18 m diameter parabolic reflector type antenna with an antenna gain of 34 dB. It generated a fan-shaped beam from minus 3 to plus 30 degrees in elevation. The polarisation was switcheable between linear vertical and circular.
In 1973 the ASR-5 antenna was modified by adding a separate receive only feedhorn and polarizer to produce separate antenna two-way coverage patterns for the close-in and long-range capabilities.
The ASR 5 was widely used at cilvil airports in the seventies and eighties. At the beginning of the 90s it was replaced by the ASR-9.
The military designator of the ASR 5 was AN/FPN-47. The transmitter and receiver site equipments of both radars are identical; however, they used different indicator groups. AN/FPN-47 is used with indicator group OA-4754/FPN-47 and ASR-5 is used with indicator groups of AN/CPN-18.
Source:
- Military Standardization Handbook United States Radar Equipment Manual TM 11-487C-1 1965, p. 74ff