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    請使用永久網址來引用或連結此文件: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/55080

    題名: Image Reconstruction for 2D Homogeneous Dielectric Cylinder Using FDTD Method and SSGA
    作者: Chien, Wei;Huang, Chung-Hsin;Chiu, Chien-Ching;Li, Ching-Lieh
    貢獻者: 淡江大學電機工程學系
    關鍵詞: Index terms-time domain inverse scattering;microwave imaging;FDTD;subgridding FDTD;NU-SSGA
    日期: 2010-02
    上傳時間: 2011-08-10 20:07:24 (UTC+8)
    出版者: Amsterdam: I O S Press
    摘要: This paper presents an image reconstruction approach for a 2-D homogeneous cylinder with arbitrary cross section in free space. The computational method combines the finite difference time domain (FDTD) method and non-uniform steady state genetic algorithm (NU-SSGA) to determine the shape and location of the scatterer with arbitrary shape. The subgirdding technique is implemented for modeling the shape of the cylinder more closely. The inverse problem is reformulated into an optimization problem and the global searching scheme NU-SSGA with closed cubic-spline is then employed to search the parameter space. A set of representative numerical results is presented for demonstrating that the proposed approach is able to efficiently reconstruct the electromagnetic properties of homogeneous dielectric scatterer even when the initial guess is far away from the exact one. In addition, the effects of Gaussian noises on imaging reconstruction are also investigated.
    關聯: International Journal of Applied Electromagnetics and Mechanics 32(2), pp.111-123
    DOI: 10.3233/JAE-2010-1070
    顯示於類別:[電機工程學系暨研究所] 期刊論文


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