Reconstruction of Two-Dimensional Permittivity Distribution With Distorted Rytov Iterative Method

Author

Zhang, Wenji ; Hoorfar, Ahmad

Author_Institution

Antenna Res. Lab., Villanova Univ., Villanova, PA, USA

Volume

10

fYear

2011

fDate

7/3/1905 12:00:00 AM

Firstpage

1072

Lastpage

1075

Abstract

The distorted Rytov iterative method (DRIM) is proposed for the reconstruction of the unknown dielectric objects embedded in two-dimensional (2-D) homogeneous space. The DRIM is based on the distorted-wave Rytov approximation and is solved iteratively by incrementally correcting the estimated contrast function in each iteration step. The background medium Green´s function is calculated numerically and is updated in each iteration step. Experimental and numerical results are presented to validate the proposed method for 2-D permittivity distribution reconstruction for both lossless and lossy cases.

Keywords

Green´s function methods; electromagnetic wave scattering; iterative methods; permittivity; 2D homogeneous space; 2D permittivity distribution reconstruction; background medium Green´s function; contrast function estimation; distorted Rytov iterative method; distorted-wave Rytov approximation; electromagnetic inverse scattering; two-dimensional permittivity distribution reconstruction; unknown dielectric object reconstruction; Approximation methods; Dielectrics; Image reconstruction; Imaging; Inverse problems; Iterative methods; Permittivity; Electromagnetic inverse scattering; Green´s function; distorted Rytov iterative method (DRIM); distorted-wave Rytov approximation;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2011.2169643

Filename

6029279