Electronic beam steering for passive millimeter-wave imaging

Andrew Robert Harvey; Roger Appleby; Peter R. Coward; Rupert N. Anderton; Gerald D. Hawkins

doi:10.1117/12.331143

13 November 1998 Electronic beam steering for passive millimeter-wave imaging

Andrew Robert Harvey, Roger Appleby, Peter R. Coward, Rupert N. Anderton, Gerald D. Hawkins

Proceedings Volume 3465, Millimeter and Submillimeter Waves IV; (1998) https://doi.org/10.1117/12.331143
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1998, San Diego, CA, United States

Abstract

The long-term potential of terrestrial passive millimeter imaging is contingent upon demonstrating real-time imaging with a system that can be conveniently a deployed at an acceptable cost. For small apertures with modest resolution, imaging 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. Alteratively, electronic scanning can be accomplished by electronic modulation of a filled antenna. This paper will discuss novel approaches and technology requirements for achieving electronic beam-steering.

Citation Download Citation

Andrew Robert Harvey, Roger Appleby, Peter R. Coward, Rupert N. Anderton, and Gerald D. Hawkins "Electronic beam steering for passive millimeter-wave imaging", Proc. SPIE 3465, Millimeter and Submillimeter Waves IV, (13 November 1998); https://doi.org/10.1117/12.331143

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