Accession Number : ADA337286

Title :   Inverse Scattering Problems for Electromagnetic Waves

Descriptive Note : Final rept. 15 Nov 94-14 Nov 97

Corporate Author : DELAWARE UNIV NEWARK INST FOR MATHEMATICAL SCIENCES

Personal Author(s) : Colton, David ; Monk, Peter

PDF Url : ADA337286

Report Date : 20 JAN 1998

Pagination or Media Count : 7

Abstract : This project was concerned with the problem of determining the physical and geometric properties of an unknown inhomogeneity from a knowledge of its effect on a given time harmonic electromagnetic wave with particular concern to non-destructive testing and medical imaging. The main accomplishments were: (1) The discovery of a linear method for determining the support of aberrant inhomogeneities without any a priori assumptions on either the frequency or magnitude of the inhomogeneity; (2) The application of this new linear method to problems in microwave medical imaging; (3) The analysis and numerical implementation of a method of perfectly matched lay for the solution of Maxwell's equations; and (4) The derivation of an adaptive method for mesh refinement to produce a far field pattern of prescribed accuracy.

Descriptors :   *INVERSE SCATTERING, *RADIOGRAPHY, *RADIATION PATTERNS, IMAGE PROCESSING, NONDESTRUCTIVE TESTING, MICROWAVES, ELECTROMAGNETIC WAVE PROPAGATION, FAR FIELD, MAXWELLS EQUATIONS, NEAR FIELD.

Subject Categories : Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE