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:Electromagnetic Imaging for an Imperfectly Conducting Cylinder by the Genetic Algorithm
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
語言英文
ISSN0018-9480
期刊性質國外
收錄於SCI;EI
產學合作
通訊作者
審稿制度
國別美國
公開徵稿
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