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Description of the radar set, tactical-technical characteristics

Figure 1: CAMRa
(© 2015 https://commons.wikimedia.org/wiki/File:Chilbolton_Observatory_3GHz_Radar_Antenna.jpg, User:Drichards2)

frequency: 3.0765 GHz
pulse repetition time (PRT):
pulse repetition frequency (PRF): 610 Hz
pulsewidth (τ): 0.5 µs
receive time:
dead time:
peak power: 600 kW
average power: 183 W
instrumented range: 246 km
range resolution:
beamwidth: 0.28°
hits per scan:
antenna rotation: max: 6 rpm


CAMRa (Chilbolton Advanced Meteorological Radar) is operating in the F-Band dual-polarization Doppler radar. It is the largest fully steerable meteorological radar in the world. It used to be a radio astronomy telescope, which explains its size but has had many upgrades and modifications over the years.

The radar antenna is a symmetrically parabolic reflector antenna with a diameter of 25 m and an antenna gain of 53,5 dB. The transmitter is of magnetron type. The radar transmits alternately horizontally and vertically polarized pulses, It uses a dual-channel coherent-on-receive receiver and receives both co-polar and cross-polar returns simultaneously.

Built in 1967, the radar is run by the Chilbolton Group of the Space Science and Technology Department at the STFC Rutherford Appleton Laboratory in Oxfordshire. The antenna is usable for other radars in different frequency ranges also.