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Proceedings Paper

Time-reversal focusing of elastic waves in inhomogeneous media: an application to an elastic-wave landmine detection system
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Paper Abstract

Time-reversal focusing is studied in the context of an elastic-wave landmine-detection system. Time-reversal focusing has been previously applied to the system and proven to be useful in focusing energy to targets in inhomogeneous media with discrete non-uniform scattering objects. In earlier experiments, these scattering objects took the form of multiple rocks buried throughout the region of interest. In this study, the performance of time-reversal focusing is evaluated for the case of uniform discrete scattering objects. Cylindrical and spherical scatterers are buried below the surface to provide uniform scattering. In other media, high concentrations of uniform scatterers have been observed to produce super-resolution of the time-reversal focus point. In this paper, the super-resolution phenomenon is examined in the context of the elastic wave landmine detection system operating in a soil medium.

Paper Details

Date Published: 10 June 2005
PDF: 11 pages
Proc. SPIE 5794, Detection and Remediation Technologies for Mines and Minelike Targets X, (10 June 2005); doi: 10.1117/12.603980
Show Author Affiliations
Pelham D. Norville, Georgia Institute of Technology (United States)
Waymond R. Scott Jr., Georgia Institute of Technology (United States)

Published in SPIE Proceedings Vol. 5794:
Detection and Remediation Technologies for Mines and Minelike Targets X
Russell S. Harmon; J. Thomas Broach; John H. Holloway Jr., Editor(s)

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