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RDR-1E

Description of the radar set, tactical-technical characteristics

Figure 1: Antenna ANT-1, used by RDR-1E radar,
(Courtesy of Ostron)

Figure 1: Antenna ANT-1, used by RDR-1E radar,
(Courtesy of Ostron)

Specifications
frequency: X-Band
pulse repetition time (PRT):
pulse repetition frequency (PRF): 200 Hz
pulsewidth (τ): 5.5 µs
receive time:
dead time:
peak power: 50 kW
average power:
instrumented range: 300 NM (≙ 550 km)
range resolution:
accuracy:
beamwidth:
hits per scan:
antenna rotation: 15 min⁻¹
MTBCF:
MTTR:

RDR-1E

RDR-1E was operating in X-Band airborne weather radar, which was widely used on commercial jet aircraft, e.g., in the Transall C-160. It was developed since 1964.

This system for high-speed aircraft has a range of 300 miles and self-test facilities. The possibility to adjust the elevation angle (tilt) is part of the horizontal stabilization of the antenna. The antenna has a diameter of 30 inches and uses a Cutler feed. The polarization is linear horizontal. The transmission frequency is specified (as was usual for weather radar at that time) only in the wavelength of 3.2 cm, which corresponds to 9.375 GHz. The electronic was transistorized, without the magnetron and the CRT.

In the Transall, the radar was later replaced by the ORB 37 radar of the French company Omera (now part of Thales).

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