Versatile passive millimeter wave imaging test bed

Michael C. McKinley; E. J. Kight; Dayton D. Eden; Roger M. Smith; Bryce M. Sundstrom

doi:10.1117/12.262740

18 December 1996 Versatile passive millimeter wave imaging test bed

Michael C. McKinley, E. J. Kight, Dayton D. Eden, Roger M. Smith, Bryce M. Sundstrom

Proceedings Volume 2842, Millimeter and Submillimeter Waves and Applications III; (1996) https://doi.org/10.1117/12.262740
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

Abstract

A versatile, passive 95 GHz imaging testbed is reported. Naturally occurring W-band black body radiation provides the input. One or more radiometers are mechanically scanned in a raster pattern over the focal plane. Output signals of the radiometers are amplified, sampled and integrated before A/D conversion. The passive millimeter wave (PMMW) image is formed from the resulting 2D array of focal plane data. Images from 192 by 254 to 64 by 64 pixels have been achieved, frame time being proportional to the image size. Simple image processing may be required, depending on image parameters. The test bed easily accommodates a variety of receivers, from single channel to multichannel arrays. Both superheat and tuned radio frequency radiometers have been tested. The testbed is suitable for both fixed and mobile operation. Experimental results are reported for laboratory studies and for field tests in the Big Bend and Davis Mountains regions of southern Texas. The testbed has proven to be a compact, economic and versatile method of demonstrating and exploring PMMW imaging.

Citation Download Citation

Michael C. McKinley, E. J. Kight, Dayton D. Eden, Roger M. Smith, and Bryce M. Sundstrom "Versatile passive millimeter wave imaging test bed", Proc. SPIE 2842, Millimeter and Submillimeter Waves and Applications III, (18 December 1996); https://doi.org/10.1117/12.262740

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