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    题名: Time Domain Inverse Scattering for a Homogenous Dielectric Cylinder by Asynchronous Particle Swarm Optimization
    作者: Li, Ching-Lieh;Chiu, Chien-Ching;Huang, Chung-Hsin
    贡献者: 淡江大學電機工程學系
    关键词: inverse scattering;time domain;FDTD;subgridding FDTD;APSO
    日期: 2011-05
    上传时间: 2013-03-12 11:25:33 (UTC+8)
    出版者: Conshohocken: ASTM International
    摘要: In this paper, we propose a time domain inverse scattering technique for reconstructing the electromagnetic properties of a homogeneous dielectric cylinder based on the finite difference time domain method and the asynchronous particle swarm optimization (APSO). The homogeneous dielectric cylinder with unknown electromagnetic properties is illuminated by transverse magnetic pulse and the scattered field is recorded outside. By minimizing the discrepancy between the measured and estimated scattered field data, the location, shape, and permittivity of the dielectric cylinder are reconstructed. The inverse problem is resolved by an optimization approach and the global searching scheme APSO 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 the 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: Journal of Testing and Evaluation 39(3), JTE102868(7pages)
    DOI: 10.1520/JTE102868
    显示于类别:[電機工程學系暨研究所] 期刊論文

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