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20 July 2000 Real-time passive millimeter-wave imaging from a helicopter platform
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Real time passive millimeter-wave imaging systems have a wide variety of uses from aircraft navigation and landing in fog to detection of concealed weapons. A useful imaging system for flight platforms requires a large number of pixels and a high frame rate combined with a small antenna volume and a lost cost. We present a millimeter-wave imaging system which uses 32 MMIC low noise amplifiers to display a 60 X 75 pixel image at a 30 Hz frame rate. The system's pupil-plane phased array architecture allows for a relatively thin large aperture antenna. A remotely located processor utilizes microwave guiding circuit boards to perform phase and frequency discrimination on the radiation received by the antenna array.
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Christopher A. Martin, John A. Lovberg, Stuart Enz Clark, and Joseph A. Galliano Jr. "Real-time passive millimeter-wave imaging from a helicopter platform", Proc. SPIE 4032, Passive Millimeter-Wave Imaging Technology IV, (20 July 2000);

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