Electromagnetic imaging for an imperfectly conducting cylinder buried in a three-layer structure by the genetic algorithm
學年 92
學期 1
出版(發表)日期 2004-01-01
作品名稱 Electromagnetic imaging for an imperfectly conducting cylinder buried in a three-layer structure by the genetic algorithm
作品名稱(其他語言)
著者 Lee, Y. S.; Chiu, Chien-ching; Lin, Y. S.
單位 淡江大學電機工程學系
出版者 Cambridge, MA: Electromagnetics Academy
著錄名稱、卷期、頁數 Progress In Electromagnetics Research 48, pp.27-44
摘要 The imaging of an imperfectly conducting cylinder buried in a three-layer structure by the genetic algorithm is investigated. An imperfectly conducting cylinder of unknown shape and conductivity buriedin the secondla yer scatters the incident wave from the first layer or the thirdla yer. We measure the scatteredfieldin the first andthird layers. Based on the boundary condition and the recorded scattered field, a set of nonlinear integral equations is derived and the imaging problem is reformulatedin to an optimization problem. The genetic algorithm is then employedto findout the global extreme solution of the cost function. Numerical results demonstrated that, even when the initial guess is far away from the exact one, goodreconstruction can be obtained. In such a case, the gradient-based methods often get trapped in a local extreme. In addition, the effect of uniform noise on the reconstruction is investigated.
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語言 en
ISSN 1070-4698 1559-8985
期刊性質 國外
收錄於 EI
產學合作
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審稿制度
國別 USA
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