DocumentCode :
3494914
Title :
Nonlinear acoustic concealed weapons detection
Author :
Achanta, A. ; Mckenna, M. ; Heyman, Joseph
Author_Institution :
Luna Innovations Inc., Hampton, VA
fYear :
2005
fDate :
1-1 Dec. 2005
Lastpage :
27
Abstract :
The detection of concealed weapons at a distance is a critical security issue that has been a great challenge for different imaging approaches. In this paper, we discuss the use of ultrasonics in a novel way to probe for metallic and nonmetallic materials under clothing. Conventional ultrasonics has problems penetrating clothing and produces false positives from specular reflections. Our approach is to use ultrasonics to create a localized zone where nonlinear interactions generate a lower frequency acoustic wave that is able to penetrate clothing better than direct ultrasonics. The generation of a probing beam for concealed weapons is described in this brief summary showing comparisons of the physical models with the experimental data. An imaging scan of concealed improvised weapons seized by officials at corrections institutes is presented to highlight the value of this approach
Keywords :
object detection; ultrasonic imaging; weapons; metallic materials; nonlinear acoustic concealed weapons detection; nonmetallic materials; specular reflections; ultrasonic imaging; Acoustic imaging; Acoustic signal detection; Clothing; Inorganic materials; Nonlinear acoustics; Optical reflection; Probes; Security; Ultrasonic imaging; Weapons;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Applied Imagery and Pattern Recognition Workshop, 2005. Proceedings. 34th
Conference_Location :
Washington, DC
ISSN :
1550-5219
Print_ISBN :
0-7695-2479-6
Type :
conf
DOI :
10.1109/AIPR.2005.37
Filename :
1612795
Link To Document :
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