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 Microwave Imaging for a Buried Dielectric Cylinder by Dynamic Differential Evolution
學年98
學期1
出版(發表)日期2010/01/01
作品名稱Time Domain Microwave Imaging for a Buried Dielectric Cylinder by Dynamic Differential Evolution
作品名稱(其他語言)
著者Li, Ching-Lieh; Chien, Wei; Huang, Chung-Hsin; Chiu, Chien-Ching
單位淡江大學電機工程學系
出版者Amsterdam: I O S Press
著錄名稱、卷期、頁數International Journal of Applied Electromagnetics and Mechanics 34(1-2), pp.73-86
摘要This paper presents the studies of time domain inverse scattering for a two dimensional homogeneous dielectric cylinder buried in a half-space which are based on the finite difference time domain (FDTD) method and the dynamic differential evolution (DDE). For the forward scattering, the FDTD method is employed to calculate the scattered E fields, while for the inverse scattering the DDE scheme is utilized to determine the shape, location and the permittivity of the buried cylindrical scatterer with arbitrary cross section. The subgirdding technique is implemented for the FDTD code in order to model the shape of the cylinder more smoothly. In additions, in order to describe an unknown cylinder with arbitrary cross section more effectively 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 away from the exact one, 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, DDE is able to yield good reconstructed quality.
關鍵字Time domain inverse scattering; FDTD; Subgridding; Dynamic differential evolution; Homogenous dielectric cylinder
語言英文
ISSN1383-5416
期刊性質國外
收錄於EI;SCI
產學合作
通訊作者Chiu, Chien-Ching
審稿制度
國別荷蘭
公開徵稿
出版型式紙本
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