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Proceedings Paper

Extended depth of field imaging at 94 GHz
Author(s): Joseph N. Mait; David A. Wikner; Mark S. Mirotznik; Joseph van der Gracht; Gregory P. Behrmann; Brandon L. Good; Scott A. Mathews
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Paper Abstract

We describe a computational imaging technique to extend the depth-of field of a 94-GHz imaging system. The technique uses a cubic phase element in the pupil plane of the system to render system operation relatively insensitive to object distance. However, the cubic phase element also introduces aberrations but, since these are fixed and known, we remove them using post-detection signal processing. We present experimental results that validate system performance and indicate a greater than four-fold increase in depth-of-field from 17" to greater than 68".

Paper Details

Date Published: 25 April 2008
PDF: 8 pages
Proc. SPIE 6948, Passive Millimeter-Wave Imaging Technology XI, 69480C (25 April 2008); doi: 10.1117/12.775180
Show Author Affiliations
Joseph N. Mait, Army Research Lab. (United States)
David A. Wikner, Army Research Lab. (United States)
Mark S. Mirotznik, The Catholic Univ. of America (United States)
Joseph van der Gracht, Holospex, Inc. (United States)
Gregory P. Behrmann, The Catholic Univ. of America (United States)
Brandon L. Good, The Catholic Univ. of America (United States)
Scott A. Mathews, The Catholic Univ. of America (United States)

Published in SPIE Proceedings Vol. 6948:
Passive Millimeter-Wave Imaging Technology XI
Roger Appleby; David A. Wikner, Editor(s)

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