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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/46204


    Title: Using NU-SSGA to reduce the searching time in inverse problem of a buried metallic object
    Authors: Chien, Wei;丘建青;Chiu, Chien-ching
    Contributors: 淡江大學電機工程學系
    Keywords: Cubic-spline;half-space;improved efficient steady-state genetic algorithm;NU-SSGA;inverse problem
    Date: 2005-10
    Issue Date: 2010-03-26 21:14:29 (UTC+8)
    Publisher: Piscataway: Institute of Electrical and Electronics Engineers (IEEE)
    Abstract: We describe an inverse scattering problem with the aim of reducing the computation time for recovering the details of a perfectly conducting cylindrical object buried in a half-space. First, we use Fourier-series or cubic-spline methods to describe the shape and reformulate the inverse problem into an optimization one. Then we solved it by the improved steady-state genetic algorithm (SSGA) and simple genetic algorithm (SGA) respectively and compare the cost time in finding out the global extreme solution of the objective function. It is found the searching ability of SSGA is much powerful than that of the SGA. Even when the initial guess is far away from the exact one, the cost time for converging to a global extreme solution using by SSGA is much less than that by SGA. Numerical results are given to show that the inverse problem by using SSGA is much better than SGA in time costing.
    Relation: IEEE Transactions on Antennas and Propagation 53(10), pp.3128-3134
    DOI: 10.1109/TAP.2005.856362
    Appears in Collections:[Graduate Institute & Department of Electrical Engineering] Journal Article

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