期刊論文
| 學年 | 89 |
|---|---|
| 學期 | 1 |
| 出版（發表）日期 | 2000-12-01 |
| 作品名稱 | Electromagnetic Imaging for an Imperfectly Conducting Cylinder by the Genetic Algorithm |
| 作品名稱（其他語言） | |
| 著者 | 丘建青; Chiu, Chien-ching; Chen, Wei-ting |
| 單位 | 淡江大學電機工程學系 |
| 出版者 | Piscataway: Institute of Electrical and Electronics Engineers (IEEE) |
| 著錄名稱、卷期、頁數 | IEEE transactions on microwave theory and techniques 48(11), pp.1901-1905 |
| 摘要 | Presents a computational approach to the imaging of an imperfectly conducting cylinder by the genetic algorithm (GA). A conducting cylinder of unknown shape and conductivity scatters the incident wave in free space and the scattered field is recorded outside. Based on the boundary condition and the measured scattered field, a set of nonlinear integral equations is derived and the imaging problem is reformulated into an optimization problem. The GA is then employed to find out the global extreme solution of the cost function. Numerical results demonstrated that, even when the initial guess is far away from the exact one, good reconstruction has been obtained. In such a ease, the gradient-based methods often get trapped in a local extreme. In addition, the effect of Gaussian noise on the reconstruction results is investigated. 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 | Conductors; electromagnetic scattering inverse problems; genetic algorithms; image reconstruction |
| 語言 | en |
| ISSN | 0018-9480 |
| 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 | |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/46216 ) |