教師資料查詢 | 類別: 期刊論文 | 教師: 丘建青 Chiu Chien-ching (瀏覽個人網頁)

標題:Time Domain Image Reconstruction for Homogenous Dielectric Objects by Dynamic Differential Evolution
學年98
學期2
出版(發表)日期2010/05/01
作品名稱Time Domain Image Reconstruction for Homogenous Dielectric Objects by Dynamic Differential Evolution
作品名稱(其他語言)
著者Sun, Chi-Hsien; Chiu, Chien-Ching; Li, Ching-Lieh; Huang, Chung-Hsin
單位淡江大學電機工程學系
出版者Philadelphia: Taylor & Francis Inc.
著錄名稱、卷期、頁數Electromagnetics 30(4), pp.309-323
摘要This article presents the studies of the microwave image reconstruction of two-dimensional homogeneous dielectric cylinders that are based on the finite difference time domain method and dynamic differential evolution. For forward scattering, the finite difference time domain method is employed to calculate the scattered E-fields; for inverse scattering, the dynamic differential evolution scheme is utilized to determine the shape, location, and permittivity of the cylindrical scatterers with an arbitrary cross-section. The subgirdding technique is implemented for the finite difference time domain code in order to more smoothly model the shape of the cylinder. In addition, in order to more effectively describe an unknown cylinder with an arbitrary cross-section during the course of searching, the closed cubic-spline expansion is adopted to represent the scatterer contour instead of the frequently used trigonometric series. Numerical results demonstrate that, even when the initial guess is far from exact, good reconstruction can be obtained. In addition, the effects of Gaussian noise on the reconstruction results are investigated. Numerical results show that even the measured scattered fields are contaminated with Gaussian noise, and dynamic differential evolution is able to yield good reconstructed quality.
關鍵字time domain inverse scattering; finite difference time domain; sub-gridding technique; dynamic differential evolution; homogenous dielectric cylinder
語言英文
ISSN0272-6343
期刊性質國外
收錄於SCI;EI
產學合作
通訊作者
審稿制度
國別美國
公開徵稿
出版型式紙本
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