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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/55007

    Title: Time Domain Image Reconstruction for a Buried 2D Homogeneous Dielectric Cylinder Using NU-SSGA
    Authors: Sun,Chi-Hsien;Li, Ching-Lieh;Chiu, Chien-Ching;Huang, Chung-Hsin
    Contributors: 淡江大學電機工程學系
    Keywords: FDTD;FDTD-subgridding;Microwave imaging;NU-SSGA;Time domain inverse scattering
    Date: 2011-01
    Issue Date: 2011-08-09 11:48:47 (UTC+8)
    Publisher: Philadelphia: Taylor & Francis Inc.
    Abstract: This article presents an image reconstruction approach for a buried homogeneous cylinder with arbitrary cross-section in half 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 subsurface scatterer with arbitrary shape. The FDTD-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 from the exact one. In addition, the effects of Gaussian noises on imaging reconstruction are also investigated.
    Relation: Research in Nondestructive Evaluation 22(1), pp.1-15
    DOI: 10.1080/09349847.2010.501133
    Appears in Collections:[電機工程學系暨研究所] 期刊論文

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