Title :
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
fDate :
7/1/2000 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
