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PIER PIER B PIER C PIER M PIER Letters PIER Photonics
2010-09-07
Time-Domain Inverse Scattering of a Two-Dimensional Metallic Cylinder in Slab Medium Using Asynchronous Particle Swarm Optimization
By
Chi-Hsien Sun,

    Dr. Chi-Hsien Sun

    Electrical Engineering Department

    Tamkang University

    Taiwan, R.O.C.

    Homepage

Chien-Ching Chiu,

    Dr. Chien-Ching Chiu

    Department of Electrical Engineering

    Tamkang University

    Taiwan

    Homepage

Ching-Lieh Li

    Dr. Ching-Lieh Li

    Electrical Engineering Department

    Tamkang University

    Taiwan

    Homepage

Progress In Electromagnetics Research M, Vol. 14, 85-100, 2010
doi:10.2528/PIERM10051101 | Google Scholar

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.
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Citation
Chi-Hsien Sun, Chien-Ching Chiu, and Ching-Lieh Li, "Time-Domain Inverse Scattering of a Two-Dimensional Metallic Cylinder in Slab Medium Using Asynchronous Particle Swarm Optimization," Progress In Electromagnetics Research M, Vol. 14, 85-100, 2010.
doi:10.2528/PIERM10051101
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