Standoff passive video imaging at 350 GHz with 251 superconducting detectors

Becker, Daniel, Gentry, CAle, Smirnov, Ilya, Ade, Peter ORCID: https://orcid.org/0000-0002-5127-0401, Beall, James, Cho, Hsaio-Mei, Dicker, Simon, Duncan, William, Halpern, Mark, HIlton, Gene, Irwin, Kent, Li, Dale, Paulter, Nicholas, Reintsema, Carl, Schwall, Robert and Tucker, Carole ORCID: https://orcid.org/0000-0002-1851-3918 2014. Standoff passive video imaging at 350 GHz with 251 superconducting detectors. Presented at: SPIE Defense + Security 2014, Baltimore, MD, United States, 05-09 May 2014. Proceedings Volume 9078, Passive and Active Millimeter-Wave Imaging XVII. , vol.9078 SPIE, 10.1117/12.2050712

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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.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Published Online
Status:	Published
Schools:	Physics and Astronomy
Publisher:	SPIE
Last Modified:	11 May 2023 12:45
URI:	https://orca.cardiff.ac.uk/id/eprint/156770

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