12 May 2016 Imaging, Doppler, and spectroscopic radars from 95 to 700 GHz
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Abstract
Imaging, Doppler, and spectroscopic radars from 95 to 700 GHz, all using the frequency-modulated continuous-wave technique, are in various stages of development for both defense and science applications at the Jet Propulsion Laboratory. For standoff security screening, a 340 GHz imaging radar now achieves an 8.3 Hz frame, and it has been tested using power-efficient MMIC-based active multiplier sources into its front end. That system evolved from a 680 GHz security radar platform, which has also been modified to operate in a Doppler mode for probing the dynamics of blowing sand and sensing small-amplitude target vibrations. Meanwhile, 95 and 183 GHz radars based on similar RF architectures are currently being developed to probe cometary jets in space and, using a differential absorption technique, humidity inside upper-tropospheric clouds.
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Ken B. Cooper, "Imaging, Doppler, and spectroscopic radars from 95 to 700 GHz", Proc. SPIE 9830, Passive and Active Millimeter-Wave Imaging XIX, 983005 (12 May 2016); doi: 10.1117/12.2222737; https://doi.org/10.1117/12.2222737
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