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AN/SPS-4

Description of the radar set, tactical-technical characteristics Описание; Основные тактико-технические характеристики (Базы данных)

Figure 1: AN/SPS-4

Figure 1: AN/SPS-4

Specifications
frequency: 5 450 … 5 825 MHz
(C-Band)
pulse repetition time (PRT):
pulse repetition frequency (PRF): 625 … 650 Hz
pulsewidth (τ): 0.37 … 1.3 µs
receive time:
dead time:
peak power: 180 kW
average power:
instrumented range: 20 NM (≙ 37 km)
range resolution:
accuracy:
beamwidth: 1.7° … 2.3°
hits per scan:
antenna rotation: 5 or 15 rpm
MTBCF:
MTTR:

AN/SPS-4

AN/SPS-4 was a C-Band high resolution surface search and zenith search radar of short range for use on board naval vessels of moderate size. It uses a dual antenna assembly with a paraboloid surface reflector, and a spherically zenith reflector, which permits the operator to observe targets either on and near the surface of the water or approaching from overhead.

First deliveries made August 1952. Field modifications in 1958 eliminated the zenith (limited air search) feature due to higher aircraft speeds making it's short range not practical.

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