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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/60825

    Title: Inverse scattering of a two-dimensional dielectric object by genetic algorithms
    Authors: 丘建青;Chiu, Chien-ching;Lin, Chun-jen;Wu, Yi-da
    Contributors: 淡江大學電機工程學系
    Keywords: inverse scaatering;steady-state genetic algorithm;dielectric object;imaging reconstruction
    Date: 2003-11-01
    Issue Date: 2011-10-15 00:56:24 (UTC+8)
    Publisher: The Institute of Electronics, Information and Communication Engineers(IEICE)
    Abstract: In this paper, an efficient optimization algorithm for solving the inverse problem of a two-dimensional lossless homogeneous dielectric object is investigated. A lossless homogeneous dielectric cylinder of unknown permittivity scatters the incident wave in free space and the scattered fields are recorded. Based on the boundary condition and the incident field, a set of nonlinear surface integral equation is derived. The imaging problem is reformulated into optimization problem and the steady-state genetic algorithm is employed to reconstruct the shape and the dielectric constant of the object. Numerical results show that the permittivity of the cylinders can be successfully reconstructed even when the permittivity is fairly large. The effect of random noise on imaging reconstruction is also investigated.
    Relation: EICE trans. electron E86-C(11), pp.2230-2236
    Appears in Collections:[Graduate Institute & Department of Electrical Engineering] Journal Article

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