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    Volume 43, Issue 1 (January 2015)

    Nondestructive Evaluation of Buried Dielectric Cylinders by Asynchronous Particle Swarm Optimization

    (Received 8 November 2012; accepted 10 January 2014)

    Published Online: 22 January 2015

    CODEN: JTEVAB

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    Abstract

    This paper presents the study of time domain inverse scattering for a two-dimensional inhomogeneous dielectric cylinder buried in a slab medium via the finite difference time domain (FDTD) method and the asynchronous particle swarm optimization (APSO) method. For the forward scattering part, the FDTD method was employed to calculate the scattered E fields. Base on the scattering fields, these inverse scattering problems were transformed into optimization problems. The APSO method was applied to reconstruct the permittivity of the two-dimensional inhomogeneous dielectric cylinder. In addition, the effects of Gaussian noise on the reconstruction results were investigated. Numerical results show that even when the measured scattered fields were contaminated with Gaussian noise, APSO was able to yield good reconstructed quality.


    Author Information:

    Lee, Wei-Tsong
    Electrical Engineering Dept., Tamkang Univ., Tamsui,

    Sun, Chi-Hsien
    Dept. of Electronic and Computer Engineering, National Taiwan Univ. of Science and Technology, Taipei City,

    Chiu, Chien-Ching
    Electrical Engineering Dept., Tamkang Univ., Tamsui,

    Li, Jyun-Fu
    Electrical Engineering Dept., Tamkang Univ., Tamsui,


    Stock #: JTE20120323

    ISSN:0090-3973

    DOI: 10.1520/JTE20120323

    Author
    Title Nondestructive Evaluation of Buried Dielectric Cylinders by Asynchronous Particle Swarm Optimization
    Symposium ,
    Committee E07