An angular spectral inverse scattering technique with series-expanded field in dielectric object

유전체내의 전계를 급수전걔로 표시한 각스펙트럼 영역의 역산란 방법

  • Kim, Ha-Chul (Department of Electronics, Naval Academy) ;
  • Son, Hyon (School of Electronics and Electrical Engineering, Kyungpook National University) ;
  • Choi, Hyun-Chul (School of Electronics and Electrical Engineering, Kyungpook National University)
  • 김하철 (해군사관학교 전자공학과) ;
  • 손현 (경북대학교 전자,전기공학부) ;
  • 최현철 (경북대학교 전자,전기공학부)
  • Published : 1996.05.01

Abstract

An angular spectral inverse technique, applying the moment method procedure with a series expansion for the induced field in each enlarged cell, is suggested to reconstruct permittivity profiles of inhomogeneous dielectric objects and to reduce the ill-posedness inherent to inverse scattering problems. The angular spectral inverse scattering using the pulse basis function in enlarging the scatterer has the ill-posedness due to the input data of higher spectra. To reduce the number of higher spectra, enlarging the cell size and averaging over the cell with a suitable weighting function are found to play improtant roles for the reduction of ill-posedness of the angular spectral inverse scattering problems.

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