Robust estimation of the discrete spectrum of relaxations from multiple-electromagnetic induction responses

Mu-Hsin Wei; Waymond R. Scott Jr.; James H. McClellan

doi:10.1117/12.919608

10 May 2012 Robust estimation of the discrete spectrum of relaxations from multiple-electromagnetic induction responses

Mu-Hsin Wei, Waymond R. Scott Jr., James H. McClellan

Proceedings Volume 8357, Detection and Sensing of Mines, Explosive Objects, and Obscured Targets XVII; 83570A (2012) https://doi.org/10.1117/12.919608
Event: SPIE Defense, Security, and Sensing, 2012, Baltimore, Maryland, United States

Abstract

The EMI response of a target can be accurately modeled by a sum of real exponentials. However, it is difficult to obtain the model parameters from measurements when the number of exponentials is unknown. We have previously proposed estimation methods for the model parameters from a single measurement. In this paper, we propose to increase the estimation accuracy by utilizing the multiple measurements often available for a given target. The property of measurements sharing the same relaxation frequencies is exploited to increase the estimation performance. The proposed method is shown to deliver robust estimation using synthetic, laboratory data, and field data.

Citation Download Citation

Mu-Hsin Wei, Waymond R. Scott Jr., and James H. McClellan "Robust estimation of the discrete spectrum of relaxations from multiple-electromagnetic induction responses", Proc. SPIE 8357, Detection and Sensing of Mines, Explosive Objects, and Obscured Targets XVII, 83570A (10 May 2012); https://doi.org/10.1117/12.919608

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