26 May 2011 Progress toward a video-rate, passive millimeter-wave imager for brownout mitigation
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Abstract
Currently, brownout is the single largest contributor to military rotary-wing losses. Millimeter-wave radiation penetrates these dust clouds effectively, thus millimeter-wave imaging could provide pilots with valuable situational awareness during hover, takeoff, and landing operations. Herein, we detail efforts towards a passive, video-rate imager for use as a brownout mitigation tool. The imager presented herein uses a distributed-aperture, optically-upconverted architecture that provides real-time, video-rate imagery with minimal size and weight. Specifically, we detail phenomenology measurements in brownout environments, show developments in enabling component technologies, and present results from a 30-element aperiodic array imager that has recently been fabricated.
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Daniel G. Mackrides, Christopher A. Schuetz, Richard D. Martin, Thomas E. Dillon, Peng Yao, Dennis W. Prather, "Progress toward a video-rate, passive millimeter-wave imager for brownout mitigation", Proc. SPIE 8022, Passive Millimeter-Wave Imaging Technology XIV, 802203 (26 May 2011); doi: 10.1117/12.884164; https://doi.org/10.1117/12.884164
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