Accession Number : AD0769794

Title :   A System-Synthesis Approach to the Inverse Problem of Scattering by Smooth, Convex-Shaped Scatterers for the High-Frequency Case,


Personal Author(s) : Vandenberghe,Francis H. ; Boerner,Wolfgang M.

Report Date : 26 JUL 1972

Pagination or Media Count : 9

Abstract : The solution of the inverse problem of electromagnetic scattering by smooth, convex-shaped and perfectly conducting scatterers is viewed and analysed following a system-synthesis approach. The formulation of the associated iterative averaging method is based on the fact that a knowledge of the variation of the scattered field's magnitude about the monostatic angle necessarily reflects some information on the curvature of the obstacle within the illuminated region. For the two-dimensional case this cognizance permits one to assume that for any smooth, slowly and uniformly varying, convex-shaped scatterer, an equivalent circular cylinder of identical curvature about the monostatic direction gives rise to an identical backscattered field magnitude. The method leads to the recovery of the equivalent electrical radii of curvature about the specular point which are in fair agreement with the exact values of elliptically cylindrical scatterers employed here for computational verification. (Modified author abstract)

Descriptors :   (*Electromagnetic scattering, High frequency), Backscattering, Convex bodies, Iterations, Canada

Subject Categories : Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE