Reconstruction of the Buried Homogenous Dielectric Cylinder by FDTD and Asynchronous Particle Swarm Optimization
學年 99
學期 1
出版(發表)日期 2010-08-01
作品名稱 Reconstruction of the Buried Homogenous Dielectric Cylinder by FDTD and Asynchronous Particle Swarm Optimization
作品名稱(其他語言)
著者 Huang, Chung-Hsin; Chen, Chien-Hung; Chiu, Chien-Ching; Li, Ching-Lieh
單位 淡江大學電機工程學系
出版者 Miami: Applied Computational Electromagnetics Society, Inc.
著錄名稱、卷期、頁數 Applied Computational Electromagnetics Society Journal 25(8), pp.672-681
摘要 In this paper, a time domain microwave imaging technique for resconstructing the electromagnetic properties of a buried homogeneous dielectric cylinder based on the finite difference time domain(FDTD) method and the asynchronous particle swarm optimization(APSO) are presented. The homogeneous dielectric cylinder with unknown electromagnetic properties is illuminated by transverse magnetic pulse and the scattered field is recorded outside. The idea is to minimize the errors between two E field data such that the location, shape and permittivity of the dielectric cylinder can be reconstructed through the APSO scheme. The first E field data are obtained in the forward problem by FDTD code with fine grids to mimic the experiment measurement data, while the second E field data are obtained in the inverse problem is resolve by an optimization approach, and the global searching scheme APSO is then employed to search the parameter space. A set of representative numerical results is presented for demonstrating that the proposed approach is able to efficiently reconstruct the electromagnetic properties of homogenous dielectric scatterer even when the initial guess is far away from the exact one. In addition, the effects of Gaussian noises on imaging reconstruction are also investigated.
關鍵字 APSO; FDTD; Inverse scattering; Subgridding FDTD; Time domain
語言 en
ISSN 1054-4887
期刊性質 國外
收錄於 SCI EI
產學合作
通訊作者
審稿制度
國別 USA
公開徵稿
出版型式 紙本
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