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Proceedings Paper

Improved decision-theoretic approach to the optimum detection of mines
Author(s): L. M. Collins; V. George; T. W. Altshuler; L. W. Nolte; L. Carin
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Paper Abstract

The fundamental goal of mine detection is to achieve a high detection rate along with a low false alarm rate. While many mine detectors achieve the first of these goals, it is often at the cost of a prohibitively large false alarm rate. In this paper, a Bayesian decision-theoretic approach to the detection of mines, which incorporates the physical properties of the target response to an electromagnetic induction device, is presented. This approach merges physical modeling of the evoked target response with a probabilistic description that represents uncertainty in the ground surface, composition of the mine, and its placement in the surrounding environment. This approach provides both an optimal detection scheme, and performance evaluation measures in the form of probability of detection and false alarm rate. We present results in which the model-based, Bayesian approach significantly outperforms the energy detector and matched filter detectors on data obtained from the DARPA backgrounds clutter data collection experiment. In addition, the model-based, Bayesian approach is also shown to outperform a detector which estimates the eddy-current decay rate from the data. Results are also presented to illustrate the amount of sensitivity of the matched filter detector for a known environment to incorrect prior knowledge of uncertain parameters in the demining scenario, as well as the robustness of performance and performance bounds realizable by the optimum detection algorithm that properly accounts for uncertainty within a Bayesian framework.

Paper Details

Date Published: 22 July 1997
PDF: 8 pages
Proc. SPIE 3079, Detection and Remediation Technologies for Mines and Minelike Targets II, (22 July 1997); doi: 10.1117/12.280900
Show Author Affiliations
L. M. Collins, Duke Univ. (United States)
V. George, Walcoff and Associates (United States)
T. W. Altshuler, Institute for Defense Analyses (United States)
L. W. Nolte, Duke Univ. (United States)
L. Carin, Duke Univ. (United States)

Published in SPIE Proceedings Vol. 3079:
Detection and Remediation Technologies for Mines and Minelike Targets II
Abinash C. Dubey; Robert L. Barnard, Editor(s)

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