Radiation imaging operators for the detection of buried targets

Xiao Wang; Richard E. DuBroff; Richard D. Rechtien

doi:10.1117/12.357020

2 August 1999 Radiation imaging operators for the detection of buried targets

Xiao Wang, Richard E. DuBroff, Richard D. Rechtien

Proceedings Volume 3710, Detection and Remediation Technologies for Mines and Minelike Targets IV; (1999) https://doi.org/10.1117/12.357020
Event: AeroSense '99, 1999, Orlando, FL, United States

Abstract

Radiation imaging operators are a class of linear partial differential operators that combine material boundary conditions with absorbing boundary conditions. Radiation imaging operators of various orders can be constructed by considering absorbing boundary conditions of corresponding orders. The coefficients of the radiation imaging operator, for the acoustic case, depend on the acoustic properties of the background medium of propagation and also the geometric orientation of the target surfaces. The radiation imaging operators operates on the total acoustic signal and produce a real valued function of time and space which is subsequently squared and averaged over time to produce a positive real valued image as a function of spatial coordinates. The quality of the images produced with this method depends on the accuracy of the parameters determining the coefficients in the operator. This can be demonstrated with simulated examples. In addition, some result based on data acquired from an ellipsoidal focused acoustic/receiver have been analyzed. In this case, the target consists of a shallow buried mine-like object.

Citation Download Citation

Xiao Wang, Richard E. DuBroff, and Richard D. Rechtien "Radiation imaging operators for the detection of buried targets", Proc. SPIE 3710, Detection and Remediation Technologies for Mines and Minelike Targets IV, (2 August 1999); https://doi.org/10.1117/12.357020

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