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Proceedings Paper

Standoff passive video imaging at 350 GHz with 251 superconducting detectors
Author(s): Daniel Becker; Cale Gentry; Ilya Smirnov; Peter Ade; James Beall; Hsiao-Mei Cho; Simon Dicker; William Duncan; Mark Halpern; Gene Hilton; Kent Irwin; Dale Li; Nicholas Paulter; Carl Reintsema; Robert Schwall; Carole Tucker
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Paper Abstract

Millimeter wavelength radiation holds promise for detection of security threats at a distance, including suicide bomb belts and maritime threats in poor weather. The high sensitivity of superconducting Transition Edge Sensor (TES) detectors makes them ideal for passive imaging of thermal signals at these wavelengths. We have built a 350 GHz video-rate imaging system using a large-format array of feedhorn-coupled TES bolometers. The system operates at a standoff distance of 16m to 28m with a spatial resolution of 1:4 cm (at 17m). It currently contains one 251-detector subarray, and will be expanded to contain four subarrays for a total of 1004 detectors. The system has been used to take video images which reveal the presence of weapons concealed beneath a shirt in an indoor setting. We present a summary of this work.

Paper Details

Date Published: 9 June 2014
PDF: 8 pages
Proc. SPIE 9078, Passive and Active Millimeter-Wave Imaging XVII, 907804 (9 June 2014); doi: 10.1117/12.2050712
Show Author Affiliations
Daniel Becker, National Institute of Standards and Technology (United States)
Cale Gentry, Univ. of Oklahoma (United States)
Ilya Smirnov, Univ. of Maryland (United States)
Peter Ade, Cardiff Univ. (United Kingdom)
James Beall, National Institute of Standards and Technology (United States)
Hsiao-Mei Cho, National Institute of Standards and Technology (United States)
Simon Dicker, Univ. of Pennsylvania (United States)
William Duncan, National Institute of Standards and Technology (United States)
Mark Halpern, The Univ. of British Columbia (Canada)
Gene Hilton, National Institute of Standards and Technology (United States)
Kent Irwin, Stanford Univ. (United States)
Dale Li, National Institute of Standards and Technology (United States)
Nicholas Paulter, National Institute of Standards and Technology (United States)
Carl Reintsema, National Institute of Standards and Technology (United States)
Robert Schwall, National Institute of Standards and Technology (United States)
Carole Tucker, Cardiff Univ. (United Kingdom)


Published in SPIE Proceedings Vol. 9078:
Passive and Active Millimeter-Wave Imaging XVII
David A. Wikner; Arttu R. Luukanen, Editor(s)

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