教師資料查詢 | 類別: 會議論文 | 教師: 丘建青 Chiu Chien-ching (瀏覽個人網頁)

標題:Time Domain Inverse Problem of a Buried Dielectric Cylinder
學年97
學期1
發表日期2009/03/23
作品名稱Time Domain Inverse Problem of a Buried Dielectric Cylinder
作品名稱(其他語言)
著者Chiu, Chien-ching; Li, Ching-lieh; Huang, Chung-hsin; Chang, Wan-ling
作品所屬單位淡江大學電機工程學系
出版者New York: Institute of Electrical and Electronics Engineers (IEEE)
會議名稱3rd European Conference on Antennas and Propagation(EuCAP 2009)
會議地點Berlin, Germany
摘要This paper presents an image reconstruction approach based on the time-domain and particle swarm optimization (PSO) for a 2-D homogeneous dielectric cylinder buried in a half-space. The computational method combines the finite difference time domain (FDTD) method and the particle swarm optimization (PSO) to determine the shape and location of the underground scatterer with arbitrary cross section. The subgirdding technique is implemented in the FDTD code for modeling the shape of the cylinder more closely. In order to describe an unknown cylinder with arbitrary shape more effectively, the shape function is expanded by closed cubic-spline function instead of frequently used trigonometric series. The inverse problem is resolved by an optimization approach, and the global searching scheme PSO is then employed to searching the parameter space. In order to reduce the number of the unknown parameters for the inverse scattering, the shape function of the cylinder is interpolated in terms of the closed cubic-spline. Numerical results demonstrate that, even when the initial guess is far away from the exact one, good reconstruction can be obtained.
關鍵字
語言英文
收錄於
會議性質國際
校內研討會地點
研討會時間20090323~20090327
通訊作者
國別德國
公開徵稿
出版型式
出處Antennas and Propagation, 2009. EuCAP 2009. 3rd European Conference on, pp.750-753
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