期刊論文
| 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 | en |
| ISSN | 1383-5416 |
| 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 | NLD |
| 公開徵稿 | |
| 出版型式 | 紙本 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/55084 ) |