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Proceedings Paper

Effect of magnetite on GPR for detection of buried landmines
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Paper Abstract

Ferrimagnetic minerals such as magnetite and maghaemite can affect ground-penetrating radar (GPR) signals. This may lead to false alarms and missed targets when surveying for the detection of buried landmines and unexploded ordnance (UXO). In most field situations ferrimagnetic mineral content is too low to affect GPR wave behavior. However, in soils and sedimentary material with magnetite-rich parent material large concentrations of magnetite can be found. This paper is a first systematic experimental effort to study the effects of large concentrations of magnetite for GPR detection of subsurface targets. We study the effects of (i) different homogeneous mixtures of magnetite and quartz sand and (ii) magnetite concentrated in layers (placer deposits), on the propagation behavior of GPR waves and reflection characteristics of steel and plastic balls. The balls are buried in homogeneous mixtures of magnetite and quartz sand and below a layer of pure magnetite. Important observations include that the simulated placer deposits did have a large effect on the detectability of balls below the placer deposits and that homogeneous mixtures had no significant effect.

Paper Details

Date Published: 16 May 2006
PDF: 10 pages
Proc. SPIE 6217, Detection and Remediation Technologies for Mines and Minelike Targets XI, 62170L (16 May 2006); doi: 10.1117/12.663550
Show Author Affiliations
Remke L. van Dam, Michigan State Univ. (United States)
Brian Borchers, New Mexico Tech (United States)
Jan M. H. Hendrickx, New Mexico Tech (United States)


Published in SPIE Proceedings Vol. 6217:
Detection and Remediation Technologies for Mines and Minelike Targets XI
J. Thomas Broach; Russell S. Harmon; John H. Holloway, Editor(s)

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