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Proceedings Paper

Non-linear acoustic concealed weapons detection (CWD)
Author(s): Joseph S. Heyman; Anjani Achanta; Mark Hinders; Kevin Rudd; Peter J. Costianes
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Paper Abstract

In this paper we describe an acoustic weapons detection concept that is based on ultrasonics and nonlinear acoustics. An ultrasonic projector is used to create an acoustic field at the site of inspection. The field is composed of multiple ultrasonic waves interacting at the interrogation site. The ultrasonic field creates acoustic interactions at that site which are used as the primary probe. The acoustic field is tailored to excite the target in an optimum fashion for weapons detection. In this presentation, we present aspects of this approach highlighting its ability to confine the interrogation field, create a narrow-band probing field, and the ability to scan that acoustic field to image objects. Ultrasonic propagation parameters that influence the field will be presented as will data of field characteristics. An image obtained with this system will be shown, demonstrating its capability to achieve high resolution. Effects of cloth over a weapon are shown to alter the image, yet not hide the weapon. Luna will report on its most recent findings as to the nature of this detection technology and its ability to generate information important to CWD.

Paper Details

Date Published: 19 May 2005
PDF: 8 pages
Proc. SPIE 5807, Automatic Target Recognition XV, (19 May 2005); doi: 10.1117/12.604368
Show Author Affiliations
Joseph S. Heyman, Luna Innovations, Inc. (United States)
Anjani Achanta, Luna Innovations, Inc. (United States)
Mark Hinders, College of William and Mary (United States)
Kevin Rudd, College of William and Mary (United States)
Peter J. Costianes, Air Force Research Lab. (United States)

Published in SPIE Proceedings Vol. 5807:
Automatic Target Recognition XV
Firooz A. Sadjadi, Editor(s)

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