Beam-steering technologies for real-time passive millimeter-wave imaging

Andrew Robert Harvey; Roger Appleby; Paul M. Blanchard; Alain H. Greenaway

doi:10.1117/12.319406

21 August 1998 Beam-steering technologies for real-time passive millimeter-wave imaging

Andrew Robert Harvey, Roger Appleby, Paul M. Blanchard, Alain H. Greenaway

Proceedings Volume 3378, Passive Millimeter-Wave Imaging Technology II; (1998) https://doi.org/10.1117/12.319406
Event: Aerospace/Defense Sensing and Controls, 1998, Orlando, FL, United States

Abstract

The long-term potential of terrestrial passive millimeter-wave imaging is contingent upon demonstrating real-time imaging with a system that can be conveniently integrated into a ship, land vehicle or aircraft. For small imagers with modest resolution, this can be readily achieved using fully-staring focal plane arrays, but as in the infrared, the high cost per pixel means that scanning (preferably electronic) of a smaller number of detectors, across the image is attractive. Aperture synthesis using sparse and filled arrays of antennas offers high sensitivity and resolution from a small number of antennas that can be conformal to vehicle shape, but requires complicated beam-forming technologies. Alternatively, electronic scanning can be accomplished by electronic modulation of a filled antenna. This discusses approaches and technology requirements for achieving electronic beam- steering.

Citation Download Citation

Andrew Robert Harvey, Roger Appleby, Paul M. Blanchard, and Alain H. Greenaway "Beam-steering technologies for real-time passive millimeter-wave imaging", Proc. SPIE 3378, Passive Millimeter-Wave Imaging Technology II, (21 August 1998); https://doi.org/10.1117/12.319406

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