Finite-difference time-domain formulation of an inverse scattering scheme for remote sensing of inhomogeneous lossy layered media: Part I - one dimensional case

K. Umashankar*, S. Chaudhuri, A. Taflove

*Corresponding author for this work

Research output: Contribution to journalArticle

5 Scopus citations

Abstract

The inverse scattering problem of determining the electromagnetic characteristics, namely, conductivity, permittivity and permeability profiles of an inhomogeneous one-dimensional layered medium is presented in the time domain utilizing the layer-stripping procedure. A fully explicit numerical algorithm is proposed for simultaneous extraction of the electrical parameters by simulating a real-time wave propagation and scattering based on the Finite-Difference Time-Domain method. This yields an efficient profile inversion technique suitable for layered medium synthesis. Examples of the one-dimensional conductivity and permittivity profile inversions are also presented including the depth of the medium probed.

Original languageEnglish (US)
Pages (from-to)489-508
Number of pages20
JournalJournal of Electromagnetic Waves and Applications
Volume8
Issue number4
DOIs
StatePublished - Jan 1 1994

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Physics and Astronomy(all)
  • Electrical and Electronic Engineering

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