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RW-31

Description of the radar set, tactical-technical characteristics

Figure 1: RW-31

Specifications
frequency: S-Band
pulse repetition time (PRT):
pulse repetition frequency (PRF):
pulsewidth (τ):
receiving time:
dead time:
peak power: 800 kW
average power:
instrumented range: 240 km
range resolution:
accuracy:
beamwidth:
hits per scan:
antenna rotation:
MTBCF:
MTTR:

RW-31

RW-31 “Bożena” (from Radiolokacyjna - Wysokościomierz, Bożena is a Slavic girl's name) was an height finding radar operating in S-band. The radar was coupled with a 2D surveillance radar and could report height to the radar's target. However, it could also operate in an around-view or sector mode to detect low-flying targets and feed the echo signals to the surveillance radar's display unit.

The antenna, which nodded with a hydraulic drive, nodded four times per minute. The radar electronics were of mixed tube and semiconductor design. The radar used two magnetron transmitters. Relocation to a new site could be accomplished with 3 TATRA-148s and two trailers.

It was produced at the Warsaw RAWAR radio factory for the Polish Air Defense from 1972. It was the predecessor of the NUR-41.