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ST801

Description of the radar set, tactical-technical characteristics

Figure 1: ST801

Figure 1: ST801

Specifications
frequency: 8.6 … 9.5 GHz
(X-Band)
pulse repetition time (PRT):
pulse repetition frequency (PRF): 3 000 or 4 400 Hz
pulsewidth (τ): 0.3 µs
receive time:
dead time:
peak power: 180 kW
average power: 160 W
instrumented range: 30 km
range resolution:
accuracy:
beamwidth: 2.4°
hits per scan:
antenna rotation: 20 min-1
MTBCF:
MTTR:

ST801

The ST801 is an operating in X-Band Monopulse Search- and Tracking Radar for use as the autotracking element in gunfire direction system; and in missile launching and guidance systems. Radar type ST801 is designed to interface with, and be controlled by, a weapon systems computer. Any air or surface target which has been detected either by the ship's surveillance radar, or by the ST801 in its own search mode, can be automatically acquired and tracked with the sightline stabilized against the roll and pitch motions of the ship.

In the search mode, the ST801 aerial rotates about a stabilized vertical axis providing a “true horizon” search. The performance of the radar in low angle air search, particularly when sea clutter conditions are present, can be enhanced by selection of moving target indication (MTI) signal processing.

ST802

The Radar type ST802 is the autonomous version of the ST801. It includes facilities and additional equipment for independent operation and control in systems not equipped with a central computer complex.