淡江大學機構典藏:Item 987654321/60963
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    Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/60963


    Title: Cubic-Spline Expansion for a Partially Immersed Conducting Cylinder Illuminated by TE waves
    Authors: Ho, Min-Hui;Chiu, Chien-Ching;Liao, Shu-Han;Tsai, Chia-Chang
    Contributors: 淡江大學電機工程學系
    Keywords: cubic-spline;inverse problem;partially immersed;conductor;steady-state genetic algorithm;transverse electric wave
    Date: 2009-06
    Issue Date: 2011-10-15 01:09:50 (UTC+8)
    Publisher: Sao Caetano do Sul: Sociedad Brasileira de Microondas e Optolectronica
    Abstract: This paper presents a computational approach to the imaging of a partially immersed perfectly conducting cylinder. Both cubic-spline method and trigonometric series for shape description are used and compared. A conducting cylinder of unknown shape scatters the incident transverse electric (TE) wave in free space while the scattered field is recorded outside. Based on the boundary condition and the measured scattered field, a set of nonlinear integral equations is derived and the imaging problem is reformulated into an optimization problem. An improved steady-state genetic algorithm is employed to find out the global extreme solution of the object function. It is found that the shape described by Fourier series can be reconstructed by cubic-spline expansion. On the contrary, the shape described by cubic-spline and reconstructed by Fourier series expansion will fail. Numerical results are given to show that the shape description by using cubic-spline method is much better than that by the Fourier series.
    Relation: Journal of Microwaves, Optoelectronics and Electromagnetic Applications 8(1), pp.19-32
    Appears in Collections:[Graduate Institute & Department of Electrical Engineering] Journal Article

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