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Proceedings Paper

Ultrasound sensor for remote imaging of concealed weapons
Author(s): Franklin S. Felber; Charles E. Mallon; Norbert C. Wild; Christopher M. Parry
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Paper Abstract

A breadboard ultrasound sensor was developed for remotely detecting and imaging concealed weapons. The breadboard sensor can detect metallic and non-metallic weapons concealed on a human body under heavy clothing at ranges up to 8 m and image the concealed weapons at ranges up to 5 m. This breadboard sensor has produced the only remote ultrasound images of concealed weapons ever published, including lexan (plastic) knives and a handgun concealed under a heavy sweatshirt at 15 feet. The remote imaging by ultrasound was made possible by several new technological developments. The sensor includes a novel, highly efficient source of high-power, tunable ultrasound radiation suitable for remote imaging in air. Together with millimeter-sized, highly sensitive ultrasound detectors and high-gain transceivers, these advances make possible the centimeter- resolution imaging of concealed weapons at ranges between 1 m and 5 m. The ultrasound images are processed by our IMAGE binary-thresholding program, which filters for noise, frequency, brightness, and contrast. To be developed is a brassboard sensor with an imaging array of ultrasound detectors, capable of real-time, video-frame-rate imaging of weapons concealed on moving humans.

Paper Details

Date Published: 18 February 1997
PDF: 10 pages
Proc. SPIE 2938, Command, Control, Communications, and Intelligence Systems for Law Enforcement, (18 February 1997); doi: 10.1117/12.266729
Show Author Affiliations
Franklin S. Felber, JAYCOR (United States)
Charles E. Mallon, JAYCOR (United States)
Norbert C. Wild, JAYCOR (United States)
Christopher M. Parry, GenCorp Aerojet (United States)

Published in SPIE Proceedings Vol. 2938:
Command, Control, Communications, and Intelligence Systems for Law Enforcement
Edward M. Carapezza; Donald Spector, Editor(s)

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