Application of the conjugate gradient method to inverse scattering for penetrable objects

Author

Takenaka, T. ; Wall, D.J.N. ; Harada, H. ; Tanaka, M.

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Nagasaki Univ., Japan

fYear

1993

fDate

June 28 1993-July 2 1993

Firstpage

496

Abstract

An iterative technique for reconstructing the image of the refractive index of scatterers from scattered far-field data is presented. The inverse scattering problem is treated as an optimization problem in which the refractive index is determined by minimizing the norm of the difference between the measured scattered field and the calculated scattered field for an estimated refractive index. The standard Tikhonov regularization is not used, but an outer contour of the scatterer as a priori information is incorporated at each step of the iteration.<>

Keywords

conjugate gradient methods; electromagnetic wave scattering; image reconstruction; inverse problems; refractive index; conjugate gradient method; image reconstruction; inverse scattering problem; iteration; iterative technique; outer contour; penetrable objects; refractive index of scatterers; Application software; Biomedical imaging; Dielectric measurements; Geophysical measurements; Gradient methods; Image reconstruction; Inverse problems; Mathematics; Refractive index; Scattering;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 1993. AP-S. Digest

Conference_Location

Ann Arbor, MI, USA

Print_ISBN

0-7803-1246-5

Type

conf

DOI

10.1109/APS.1993.385299

Filename

385299