ASMI-18X
Description of the radar set, tactical-technical characteristics
Figure 1: ASMI-18X on the ATC-tower of London Gatwick Airport, West Sussex, Great Britain
(© 1982 N. Chadwick, cc-by-sa/2.0)
Figure 1: ASMI-18X on the ATC-tower of London Gatwick Airport, West Sussex, Great Britain
(© 1982 N. Chadwick, cc-by-sa/2.0)
| Specifications | |
|---|---|
| frequency: | 9 410 MHz
(X-Band) |
| pulse repetition time (PRT): | 250 µs |
| pulse repetition frequency (PRF): | 4 kHz |
| pulsewidth (τ): | 40 ns |
| receiving time: | 54 µs |
| dead time: | 196 µs |
| peak power: | 20 kW |
| average power: | 200 W |
| instrumented range: | 8 km |
| range resolution: | 6 m |
| accuracy: | |
| beamwidth: | 0.43° |
| hits per scan: | |
| antenna rotation: | 60 rpm |
| MTBCF: | |
| MTTR: | |
ASMI-18X
ASMI-18X (Airport Surface Movement Indicator) is operating in the X-Band surface movement radar.
The antenna is an 18 feet wide (≙ 5.5 m) slotted waveguide radiator horizontally polarized and providing 36 dB gain and fan-beam pattern with a vertically opening of 15 degrees. The radar’s sensitivity is sufficient to detect a crawling person at 2 km on the runways, and the resolution is sufficient to clearly show the shape of large aircraft.
This radar was developed by RACALL Avionics in 1980.
Source:
- J.D. Holcroft, S.J. Martin: “ASMI-18X, an airport surface surveillance radar”, in IEE RADAR-82, 1982, ISSN： 0537-9989, p. 311-315.