Radiation Imaging Operators for the Detection of Buried Targets

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 on the geometric orientation of the target surfaces. The radiation imaging operators operate on the total acoustic signal (incident plus reflected) 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 results based on data acquired from an ellipsoidal focused acoustic source/receiver have been analyzed. In this case, the target consists of a shallow buried mine-like object.

Department(s)

Electrical and Computer Engineering

Second Department

Geosciences and Geological and Petroleum Engineering

International Standard Serial Number (ISSN)

0277-786X

Document Type

Article - Journal

Document Version

Final Version

File Type

text

Language(s)

English

Rights

© 2024 Society of Photo-optical Instrumentation Engineers, All rights reserved.

Publication Date

01 Jan 1999

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