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 en
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 DEU
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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