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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/55083


    Title: Time-Domain Inverse Scattering of a Two-Dimensional Metallic Cylinder in Slab Medium Using Asynchronous Particle Swarm Optimization
    Authors: Sun, Chi-Hsien;Li, Ching-Lieh;Chiu, Chien-Ching
    Contributors: 淡江大學電機工程學系
    Date: 2010
    Issue Date: 2011-08-10 20:11:51 (UTC+8)
    Publisher: Cambridge: Electromagnetics Academy
    Abstract: This paper presents asynchronous particle swarm optimization (APSO) applied to the time-domain inverse scattering problems of two-dimensional metallic cylinder buried in slab medium. For this study the finite-difference time-domain (FDTD) is employed for the analysis of the forward scattering part, while for the APSO is applied for the reconstruction of the two-dimensional metallic cylinder buried in slab medium, which includes of the location and shape the metallic cylinder. For the forward scattering, conceptually several electromagnetic pulses are launched to illuminate the unknown scatterers, and then the scattered electromagnetic fields around are measured. In order to efficiently describe the details of the cylinder shape, sub-gridding technique is implemented in the finite difference time domain method. Then, the measured EM fields are used for inverse scattering, in which APSO is employed to transform the inverse scattering problem into optimization problem. By comparing the measured scattered fields and the calculated scattered fields, the shape and location of the metallic cylinder are reconstructed. In addition, the effects of Gaussian noises on imaging reconstruction are also investigated.
    Relation: Progress In Electromagnetics Research M 14, pp.85-100
    DOI: 10.2528/PIERM10051101
    Appears in Collections:[Graduate Institute & Department of Electrical Engineering] Journal Article

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