Iterative determination of complex permittivity profile of a dielectric cylindrical object

Author

Tanaka, Mitsuru ; Hiramatsu, Kaoru

Author_Institution

Dept. of Electr. & Electron. Eng., Oita Univ., Oita, Japan

fYear

2014

fDate

2-5 Dec. 2014

Firstpage

125

Lastpage

126

Abstract

An iterative reconstruction method for microwave imaging of a lossy dielectric cylinder from measurements of multi-frequency scattering data is presented. The multigrid optimization method is used to minimize a cost functional defined by the norm of a difference between the scattered electric fields measured and calculated. Numerical results for two dielectric circular cylinders located in free space demonstrate that the proposed method is effective in determining the complex permittivity profile of the scattering object even in the presence of a measurement error in the scattering data.

Keywords

dielectric materials; electric field measurement; electromagnetic wave scattering; image reconstruction; iterative methods; measurement errors; microwave imaging; optimisation; permittivity; dielectric cylindrical object; electric fields; iterative determination; iterative reconstruction method; lossy dielectric cylinder; measurement error; microwave imaging; multifrequency scattering data; multigrid optimization method; permittivity profile; scattering object; Decision support systems; Inverse scattering problem; complex permittivity profile; iterative determination; multigrid optimization method;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation (ISAP), 2014 International Symposium on

Conference_Location

Kaohsiung

Type

conf

DOI

10.1109/ISANP.2014.7026562

Filename

7026562