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Ka-Band ARM Zenith Radar (KAZR)

Description of the radar set, tactical-technical characteristics

Figure 1: KAZR installation at SGP (foreground) with SACR (background)
(36°36'19.1" N   97°29'10.7" W)

frequency: 34.83 - 34.69 GHz (Ka-band)
pulse repetition time (PRT):
pulse repetition frequency (PRF): max.: 20 kHz
pulsewidth (τ): 100 ns – 20 μs
peak power: 2 kW
average power:
instrumented range:
range resolution:
beamwidth: 0.2 or 0.3°

Ka-Band ARM Zenith Radar (KAZR)

Ka-band ARM zenith radar (KAZR) is a zenith-pointing Doppler cloud radar operating at approximately 35 GHz. The KAZR is an evolutionary follow-on radar to ARM’s widely successful millimeter-wavelength cloud radar (MMCR). The main purpose of the KAZR is to provide vertical profiles of clouds by measuring the first three Doppler moments: reflectivity, radial Doppler velocity, and spectra width. At the sites where the dual-polarization measurements are made, the Doppler moments for the cross-polarization channel are also available. In addition to the moments, velocity spectra are also continuously recorded for each range gate.

The Transmitter uses a Traveling Wave Tube amplifier. The antenna type is a Cassegrain parabolic reflector with a diameter of either 3 m or 2 m.