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Time domain inversion techniques for electromagnetic scattering problems

Publiceringsår: 1990
Språk: Engelska
Sidor: 33
Publikation/Tidskrift/Serie: Technical Report LUTEDX/(TEAT-7011)/1-33/(1990)
Dokumenttyp: Rapport
Övrig information: Published version: Invariant Imbedding and Inverse Problems, Eds. J. P. Corones, G. Kristensson, P. Nelson, and D. L. Seth, pp. 1-29, SIAM, Philadephia, 1992.

Sammanfattning

This paper presents a review of and a comparison between two different methods to solve an inverse scattering problem in the time domain. The problem is that of propagation of transient electromagnetic waves in spatially inhomogeneous slabs of finite length. The permittivity and conductivity profiles are assumed to vary only with depth and the scattering problem is thus onedimensional. Several algorithms to solve the direct and inverse scattering problems for continuous and discontinuous permittivity profiles are suggested. Some of these algorithms have not been published before. The aim of this paper is to compare and review these methods. More specifically, the numerical performance of the invariant imbedding approach (layer-stripping)and the Green functions formulation (downward continuation)is compared. Some new results based upon time reversal techniques for a lossless slab are presented in an appendix.

Disputation

Nyckelord

  • Technology and Engineering

Övrigt

Published
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