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SD

Description of the radar set, tactical-technical characteristics

Figure 1: SD

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
receive 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.