Description of the radar set, tactical-technical characteristics
Figure 1: SD
|frequency:||113 … 114 MHz
|pulse repetition time (PRT):|
|pulse repetition frequency (PRF):||60 Hz|
|pulsewidth (τ):||8.5 µs|
|peak power:||100 kW|
|instrumented range:||20 NM (≙ 37 km)|
|accuracy:||± 450 m|
|hits per scan:|
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.