SD
Description of the radar set, tactical-technical characteristics
Figure 1: SD
| Specifications | |
|---|---|
| frequency: | 113 … 114 MHz
(VHF-Band) |
| pulse repetition time (PRT): | |
| pulse repetition frequency (PRF): | 60 Hz |
| pulsewidth (τ): | 8.5 µs |
| receiving time: | |
| dead time: | |
| peak power: | 100 kW |
| average power: | |
| instrumented range: | 20 NM (≙ 37 km) |
| range resolution: | |
| accuracy: | ± 450 m |
| beamwidth: | |
| hits per scan: | |
| antenna rotation: | |
| MTBCF: | |
| MTTR: | |
SD
SD was operating in VHF-Band early warning radar for use on submarines. The versions SD-a, SD-1, and the SD-2 were not yet able to determine the bearing. Only the SD-3 version was able to do so with an accuracy of ±10°.
The antenna consisted of a thin horizontally polarized dipole antenna, both halves of which were angled 90° in the middle to ensure omnidirectional radiation. The antenna could be erected on a 12 m high retractable mast. The radar was coupled to an (IFF) system and could display both information on an A-scope.