Title :
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
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;
Conference_Titel :
Antennas and Propagation (ISAP), 2014 International Symposium on
Conference_Location :
Kaohsiung
DOI :
10.1109/ISANP.2014.7026562
