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Proceedings Paper

Single-sensor processing and sensor fusion of GPR and EMI data for land mine detection
Author(s): Ping Gao; Stacy L. Tantum; Leslie M. Collins
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Paper Abstract

In our previous work, we have shown theoretically that model-based Bayesian approach to the detection of landmines affords significant performance gains over standard thresholding techniques. These performance gains hold for both time- and frequency-domain electromagnetic induction (EMI) sensors. Our methodology merges physical models of the evoked target response with a probabilistic description of the clutter. Under a specific set of assumptions, our technique provides both an optimal detection algorithm and performance evaluation measures expressed as probability of detection and probability of false alarm. This approach also provides a formal framework for incorporating target and/or environmental uncertainties into the processing algorithms. The significant performance improvements observed theoretically have been verified on both time-domain and frequency-domain EMI data collected in the field. In this paper, we review our previous theoretical work, and we use actual data collected in the field to illustrate the improvement obtained by appropriately accounting for environmental uncertainties. We present new results in which a suboptimal processor provides nearly identical performance to that of the optimal processor but with much greater computational efficiency. We also present result that indicate that such an approach can be applied successfully to ground penetrating radar data. Specifically, we consider data taken by the BRTRC/Wichmannn system. In addition to processing the data from each type of sensor individually, as well as the combination of sensor, will be discussed.

Paper Details

Date Published: 2 August 1999
PDF: 10 pages
Proc. SPIE 3710, Detection and Remediation Technologies for Mines and Minelike Targets IV, (2 August 1999); doi: 10.1117/12.356994
Show Author Affiliations
Ping Gao, Duke Univ. (United States)
Stacy L. Tantum, Duke Univ. (United States)
Leslie M. Collins, Duke Univ. (United States)

Published in SPIE Proceedings Vol. 3710:
Detection and Remediation Technologies for Mines and Minelike Targets IV
Abinash C. Dubey; James F. Harvey; J. Thomas Broach; Regina E. Dugan, Editor(s)

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