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Description of the radar set, tactical-technical characteristics

Figure 1: EASAT PSR
© 2022 Easat Radar Systems Ltd.

frequency: 2 700 … 2 900 MHz
(S band)
pulse repetition time (PRT):
pulse repetition frequency (PRF):
pulsewidth (τ): 1 µs and 40 … 300 µs
receiving time:
dead time:
peak power: 16 or 28 kW
average power:
instrumented range: 60 … 120 NM
(≙ 110 … 220 km)
range resolution: 230 m
accuracy: 50 m ; 0.1°
beamwidth: < 2°
hits per scan:
antenna rotation: 6 … 15 rpm


The EASAT PSR (Primary Surveillance Radar) is an operating in the S band Terminal Area Radar (TAR) for use at airports for airspace surveillance and control of a landing approach.

The radar uses a parabolic antenna with a cosecant squared pattern and separate receive channels for the high and low beam for better-fixed target rejection. Both horn radiators can be switched from linear to circular polarization if required. The transmitter uses 12 or 24 solid-state amplifier modules, which can be changed during operation. Up to two of these amplifier modules can fail without any noticeable loss of range.