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Proceedings Paper

A swept millimeter-wave technique for the detection of concealed weapons and thin layers of dielectric material with or without fragmentation
Author(s): David A. Andrews; Sarah Smith; Nacer Rezgui; Nicholas Bowring; Matthew Southgate; Stuart Harmer
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Paper Abstract

Active millimetre wave systems, operating at frequencies up to 110 GHz have been used to detect the presence of both concealed dielectric and metallic objects at standoff distances. Co- and cross-polarized superheterodyne or direct detectors are used to differentiate between metallic and purely dielectric objects. The technique determines the thickness of a dielectric target and detects the presence of concealed handguns or fragmentation by utilising the pattern of the responses from both the co- and cross-polarized detectors. The returned signals are processed and analysed by an artificial neural network, which classifies the responses according to their correspondence to previous training data.

Paper Details

Date Published: 29 April 2009
PDF: 10 pages
Proc. SPIE 7309, Passive Millimeter-Wave Imaging Technology XII, 73090H (29 April 2009); doi: 10.1117/12.818875
Show Author Affiliations
David A. Andrews, Manchester Metropolitan Univ. (United Kingdom)
Sarah Smith, Manchester Metropolitan Univ. (United Kingdom)
Nacer Rezgui, Manchester Metropolitan Univ. (United Kingdom)
Nicholas Bowring, Manchester Metropolitan Univ. (United Kingdom)
Matthew Southgate, Manchester Metropolitan Univ. (United Kingdom)
Stuart Harmer, Manchester Metropolitan Univ. (United Kingdom)

Published in SPIE Proceedings Vol. 7309:
Passive Millimeter-Wave Imaging Technology XII
Roger Appleby; David A. Wikner, Editor(s)

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