Mk. 22
Description of the radar set, tactical-technical characteristics
Figure 1: Mk. 22 (“orange peel” antenna)
and Mk. 12 (rectangle antenna)
| Specifications | |
|---|---|
| frequency: | 9 375 ± 30 MHz
(X-Band) |
| pulse repetition time (PRT): | |
| pulse repetition frequency (PRF): | 480 Hz or 1 639 Hz |
| pulsewidth (τ): | 0.5 µs |
| receiving time: | |
| dead time: | |
| peak power: | 25 … 35 kW |
| average power: | 7 W or 25 W |
| instrumented range: | 10 NM (≙ 18 km) |
| range resolution: | 90 m |
| accuracy: | |
| beamwidth: | β= 1.2° ;ε= 4.5° |
| hits per scan: | |
| antenna rotation: | |
| MTBCF: | |
| MTTR: | |
Mk. 22
Mk. 22 is operating in the X-Band Fire Control System (FCS). It is designed as an auxiliary equipment for use as an elevation finder in conjunction with the radars Mk. 4 and Mk. 12. It furbishes elevation and range information on low-angle targets.
The reflector is an elliptically shaped, cut paraboloid of open-grate construction. It is 6 feet high by 1½ feet wide by 2½ feet deep and provides a beavertail pattern. The antenna mechanically scans in the vertical plane over an elevation angle of 13° at a rate of 2 scans per second.