| Electromagnetic imaging for shape and variable conductivity | |
|---|---|
| 學年 | 93 |
| 學期 | 1 |
| 出版（發表）日期 | 2004-09-01 |
| 作品名稱 | Electromagnetic imaging for shape and variable conductivity |
| 作品名稱（其他語言） | |
| 著者 | Wei, Chien; 丘建青; Chiu, Chien-ching |
| 單位 | 淡江大學電機工程學系 |
| 出版者 | Wiley-Blackwell |
| 著錄名稱、卷期、頁數 | International Journal of RF and Microwave Computer-Aided Engineering 14(5), pp.433-440 |
| 摘要 | We consider the inverse problem of determining both the shape and the conductivity of a two-dimensional (2D) conducting scatterer from the knowledge of the far-field pattern of TM waves by solving the ill-posed nonlinear equation. Based on the boundary condition and measured scattered field, a set of nonlinear integral equations is derived and the imaging problem is reformulated into an optimization problem. Satisfactory reconstructions are achieved by the genetic algorithm. Numerical results demonstrate that, even when the initial guess is far away from the exact one, good reconstruction can be obtained. In addition, the effect of Gaussian noise on the reconstruction results is investigated. The numerical results show that multiple incident directions permit good reconstruction of shape and, to a lesser extent, conductivity in the presence of noise in measured data. |
| 關鍵字 | |
| 語言 | en |
| ISSN | 1099-047X |
| 期刊性質 | 國內 |
| 收錄於 | SCI EI |
| 產學合作 | |
| 通訊作者 | |
| 審稿制度 | 否 |
| 國別 | TWN |
| 公開徵稿 | |
| 出版型式 | ,電子版 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/46189 ) |
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