Imaging dielectric and conductivity from GPR measurements

Alan J. Witten

doi:10.1117/12.324157

4 September 1998 Imaging dielectric and conductivity from GPR measurements

Alan J. Witten

Proceedings Volume 3392, Detection and Remediation Technologies for Mines and Minelike Targets III; (1998) https://doi.org/10.1117/12.324157
Event: Aerospace/Defense Sensing and Controls, 1998, Orlando, FL, United States

Abstract

It has been shown that, for non-conductive backgrounds and non-conductive spatial heterogenities, two- and three- dimensional images of spatial variations in wave speed can be reconstructed from broadband ground penetrating radar (GPR) measurements. In diffraction tomography, the reconstructed image is the so-called object function which, for non- conducting heterogeneities, is one minus the square of the real refractive index. In cases where spatial variations in electrical conductivity exist, the object function is complex with real part related to relative changes in the real refractive index and the imaginary part representing the spatial variations in conductivity. Thus, by considering the complex object function, it is possible to reconstruct images of both wave speed and conductivity. The procedure presented here is used to reconstruct images of wave speed and conductivity for several buried targets.

Citation Download Citation

Alan J. Witten "Imaging dielectric and conductivity from GPR measurements", Proc. SPIE 3392, Detection and Remediation Technologies for Mines and Minelike Targets III, (4 September 1998); https://doi.org/10.1117/12.324157

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