Reconstruction of dielectric cylinders using FDTD and topology optimization technique

Author

Chung, Young-Seek ; Cheon, Changyul ; Hahn, Song-Yop

Author_Institution

Sch. of Electr. Eng., Seoul Nat. Univ., South Korea

Volume

36

Issue

4

fYear

2000

fDate

7/1/2000 12:00:00 AM

Firstpage

956

Lastpage

959

Abstract

The Finite Difference Time Domain (FDTD) and topology optimization techniques are used for two dimensional inverse scattering problems in the TM case, which are to reconstruct shapes and material distributions of unknown dielectric cylinders. Using topology optimization and the Born iterative method, the sensitivity information is evaluated, which is employed in a gradient-based optimization algorithm. The total variation (TV) scheme, one of the regularization methods, is used to enhance the quality of the reconstructed shape

Keywords

electromagnetic wave scattering; finite difference time-domain analysis; image reconstruction; inverse problems; iterative methods; microwave imaging; optimisation; topology; 2D inverse scattering problems; Born iterative method; FDTD method; TM case; dielectric cylinder reconstruction; gradient-based optimization algorithm; material distributions; regularization method; sensitivity information evaluation; topology optimization technique; total variation scheme; Dielectric materials; Finite difference methods; Inverse problems; Iterative algorithms; Iterative methods; Optimization methods; Shape; TV; Time domain analysis; Topology;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.877600

Filename

877600