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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/88101

    Title: 半空間多導體之微波成像
    Other Titles: Microwave imaging for buried multiple conductors
    Authors: 蘇千華;Su, Chien-Hua
    Contributors: 淡江大學電機工程學系碩士班
    丘建青;Chiu, Chien-Ching
    Keywords: 多導體;微波成像;非同步粒子群聚最佳化法;Microwave imaging;multiple conductors;Half Space;APSO
    Date: 2012
    Issue Date: 2013-04-13 12:00:47 (UTC+8)
    Abstract: 本論文探討改良式粒子群聚法則應用於掩埋二維雙導體之逆散射問題。針對物體照射極化波之情況,在半空間中雙導體的逆散射進行探討。
    This paper presents an inverse scattering problem for recovering the shape of multiple conducting cylinders with the immersed targets in a half space by Asynchronous particle swarm optimization (APSO). Two separate perfect-conducting cylinders of unknown shapes are buried in one half-space and illuminated by the transverse magnetic(TM) plane wave from the other half space.
    Based on the boundary condition and the measured scattered field, a sat of nonlinear integral equation is derived and the imaging problem is reformulated into optimization problem.
    The Asynchronous particle swarm optimization algorithm is employed to find out the global extreme solution of the object function. Numerical results demonstrate even when the initial guesses are far away from the exact shapes, and then the multiple scattered fields between two conductors are serious the good reconstruction can be obtained.
    In addition, the effect of Gaussian noise on the reconstruction result is investigated and through the numerical simulation shows that we can still get good results of reconstructions.
    Appears in Collections:[電機工程學系暨研究所] 學位論文

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