Realistic subsurface anomaly discrimination using electromagnetic induction and an SVM classifier

  • Authors:
  • Juan Pablo Fernández;Fridon Shubitidze;Irma Shamatava;Benjamin E. Barrowes;Kevin O'Neill

  • Affiliations:
  • Thayer School of Engineering, Dartmouth College, Hanover, NH;Thayer School of Engineering, Dartmouth College, Hanover, NH and Sky Research, Inc., Hanover, NH;Thayer School of Engineering, Dartmouth College, Hanover, NH and Sky Research, Inc., Hanover, NH;Thayer School of Engineering, Dartmouth College, Hanover, NH and USA ERDC Cold Regions Research and Engineering Laboratory, Hanover, NH;Thayer School of Engineering, Dartmouth College, Hanover, NH and USA ERDC Cold Regions Research and Engineering Laboratory, Hanover, NH

  • Venue:
  • EURASIP Journal on Advances in Signal Processing - Special issue on advances in signal processing for maritime applications
  • Year:
  • 2010

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Abstract

The environmental research program of the United States military has set up blind tests for detection and discrimination of unexploded ordnance. One such test consists of measurements taken with the EM-63 sensor at Camp Sibert, AL. We review the performance on the test of a procedure that combines a field-potential (HAP) method to locate targets, the normalized surface magnetic source (NSMS) model to characterize them, and a support vector machine (SVM) to classify them. The HAP method infers location from the scattered magnetic field and its associated scalar potential, the latter reconstructed using equivalent sources. NSMS replaces the target with an enclosing spheroid of equivalent radial magnetization whose integral it uses as a discriminator. SVM generalizes from empirical evidence and can be adapted for multiclass discrimination using a voting system. Our method identifies all potentially dangerous targets correctly and has a false-alarm rate of about 5%.