
Proceedings Paper
Remote concealed threat detection by novel classification algorithms applied to multi-polarimetric UWB radarFormat | Member Price | Non-Member Price |
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Paper Abstract
A method of effectively detecting remote concealed threats, particularly knives and guns, has been developed. This
method uses multi-polarimetric ultra wide band active microwave radar to remotely scan a person under investigation. It
has been shown that the radar signatures from such scans can be used to detect whether a person is carrying a concealed
threat. A Principal Component Analysis (PCA) data reduction technique followed by a neural network (NN) is used to
classify the information extracted from the radar signals. The technique combines the co, 45°, cross, and 135° polarized
transceived radar signals into a single data set for classification. Illuminating the target with a range of polarizations,
together with choosing a radar beam size commensurate with the targets in question, produces good discrimination
between threat and non-threat items. Once collected, the data sets obtained are reduced via PCA, which significantly
improves the correct classification rate at the NN stage and makes the technique more tolerant of variations in the threat
objects orientation and better able to detect a wider range of threat types. Experimental results are presented which show
that a detection rate of up to 80% for knives and guns can be achieved, with a false alarm rate as low as 4%.
Paper Details
Date Published: 31 May 2013
PDF: 8 pages
Proc. SPIE 8714, Radar Sensor Technology XVII, 871410 (31 May 2013); doi: 10.1117/12.2016586
Published in SPIE Proceedings Vol. 8714:
Radar Sensor Technology XVII
Kenneth I. Ranney; Armin Doerry, Editor(s)
PDF: 8 pages
Proc. SPIE 8714, Radar Sensor Technology XVII, 871410 (31 May 2013); doi: 10.1117/12.2016586
Show Author Affiliations
Dean O'Reilly, Manchester Metropolitan Univ. (United Kingdom)
Nicholas Bowring, Manchester Metropolitan Univ. (United Kingdom)
Nacer Ddine Rezgui, Manchester Metropolitan Univ. (United Kingdom)
Nicholas Bowring, Manchester Metropolitan Univ. (United Kingdom)
Nacer Ddine Rezgui, Manchester Metropolitan Univ. (United Kingdom)
David Andrews, Manchester Metropolitan Univ. (United Kingdom)
Stuart Harmer, Manchester Metropolitan Univ. (United Kingdom)
Stuart Harmer, Manchester Metropolitan Univ. (United Kingdom)
Published in SPIE Proceedings Vol. 8714:
Radar Sensor Technology XVII
Kenneth I. Ranney; Armin Doerry, Editor(s)
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