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2 August 1999 Single-sensor processing and sensor fusion of GPR and EMI data for land mine detection
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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.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Ping Gao, Stacy L. Tantum, and Leslie M. Collins "Single-sensor processing and sensor fusion of GPR and EMI data for land mine detection", Proc. SPIE 3710, Detection and Remediation Technologies for Mines and Minelike Targets IV, (2 August 1999); https://doi.org/10.1117/12.356994
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