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Proceedings Paper

Direct mechanical landmine excitation with scanner laser Doppler vibrometer surface measurements
Author(s): S. Bishop; J. Vignola; J. Judge; P. Tsopelas; A. Kurdila
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Paper Abstract

Remote acoustic or seismic forms of excitation for laser Doppler vibration landmine detection are low false alarm rate detection strategies. A more recent approach now under investigation includes a direct mechanical excitation through a prodder or probe. In this research, we report on simple laboratory measurements of the VS-1.6 landmine undergoing direct mechanical excitation from a modified prodder while measuring the landmine's pressure plate vibrational response with a scanning laser Doppler vibrometer. The direct mechanical excitation mechanism, located near the prodding end of a rod, consists of a miniature piezoelectric stack actuator. We additionally compare direct excitation to both acoustic and seismic methods in a large sandbox filled with dry sand. We show that for the landmine buried almost flush, direct contact mechanical excitation compares favorably to both seismic and acoustic excitation responses for the (0,1) mode of the pressure plate. We also observe additional features not previously seen in either seismic or acoustic excitation.

Paper Details

Date Published: 7 May 2007
PDF: 12 pages
Proc. SPIE 6553, Detection and Remediation Technologies for Mines and Minelike Targets XII, 655304 (7 May 2007); doi: 10.1117/12.721512
Show Author Affiliations
S. Bishop, U.S. Army RDECOM CERDEC NVESD (United States)
The Catholic Univ. of America (United States)
J. Vignola, The Catholic Univ. of America (United States)
J. Judge, The Catholic Univ. of America (United States)
P. Tsopelas, The Catholic Univ. of America (United States)
A. Kurdila, Virginia Polytechnic Institute (United States)

Published in SPIE Proceedings Vol. 6553:
Detection and Remediation Technologies for Mines and Minelike Targets XII
Russell S. Harmon; J. Thomas Broach; John H. Holloway, Editor(s)

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