Imaging and detection of mines from acoustic measurements

Alan J. Witten; Charles A. DiMarzio; Wen Li; Stephen W. McKnight

doi:10.1117/12.357023

2 August 1999 Imaging and detection of mines from acoustic measurements

Alan J. Witten, Charles A. DiMarzio, Wen Li, Stephen W. McKnight

Proceedings Volume 3710, Detection and Remediation Technologies for Mines and Minelike Targets IV; (1999) https://doi.org/10.1117/12.357023
Event: AeroSense '99, 1999, Orlando, FL, United States

Abstract

A laboratory-scale acoustic experiment is described where a buried target, a hockey puck cut in half, is shallowly buried in a sand box. To avoid the need for source and receiver coupling to the host sand, an acoustic wave is generated in the subsurface by a pulsed laser suspended above the air-sand interface. Similarly, an airborne microphone is suspended above this interface and moved in unison with the laser. After some pre-processing of the data, reflections for the target, although weak, could clearly be identified. While the existence and location of the target can be determined by inspection of the data, its unique shape can not. Since target discrimination is important in mine detection, a 3D imaging algorithm was applied to the acquired acoustic data. This algorithm yielded a reconstructed image where the shape of the target was resolved.

Citation Download Citation

Alan J. Witten, Charles A. DiMarzio, Wen Li, and Stephen W. McKnight "Imaging and detection of mines from acoustic measurements", Proc. SPIE 3710, Detection and Remediation Technologies for Mines and Minelike Targets IV, (2 August 1999); https://doi.org/10.1117/12.357023

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