English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 51931/87076 (60%)
造訪人次 : 8481532      線上人數 : 89
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
搜尋範圍 查詢小技巧:
  • 您可在西文檢索詞彙前後加上"雙引號",以獲取較精準的檢索結果
  • 若欲以作者姓名搜尋,建議至進階搜尋限定作者欄位,可獲得較完整資料
  • 進階搜尋
    請使用永久網址來引用或連結此文件: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/91628

    題名: Electromagnetic scattering of metallic cylinders of arbitrary shape by using asynchronous particle swarm optimization and non-uniform steady state genetic algorithm
    作者: Li, Ching-Lieh;Sun, Chi-Hsien;Chiu, Chien-Ching;Tuen, Lung-Fai;Su, Chien-Hua
    貢獻者: 淡江大學電機工程學系
    關鍵詞: Inverse scattering;microwave image;buried conductors;asynchronous particle swarm optimization;genetic algorithms (SSGA);half space
    日期: 2013-04-02
    上傳時間: 2013-07-23 12:19:19 (UTC+8)
    出版者: Amsterdam: IOS Press
    摘要: Two techniques for the shape reconstruction of multiple metallic cylinders from scattered fields are investigated in this paper, in which two-dimensional configurations are involved. After an integral formulation, the method of moment (MoM) is applied to solve it numerically. Two separate perfect-conducting cylinders of unknown shapes are buried in one half-space and illuminated by the transverse magnetic (TM) plane wave from the other half space. Based on the boundary condition and the measured scattered field, a set of nonlinear integral equation is derived and the imaging problem is reformulated into optimization problem. The non-uniform steady state genetic algorithm (NU-SSGA) and asynchronous particle swarm optimization (APSO) are employed to find out the global extreme solution of the object function. Numerical results demonstrate even when the initial guesses are far away from the exact shapes, and the multiple scattered fields between two conductors are serious, good reconstruction can be obtained. In addition, the effect of Gaussian noise on the reconstruction results is investigated and the numerical simulation shows that the reconstruction results are good and acceptable, as long as the SNR is greater than 20 dB.
    關聯: International Journal of Applied Electromagnetics and Mechanics 42(3), pp.349-358
    DOI: 10.3233/TAD-131669
    顯示於類別:[電機工程學系暨研究所] 期刊論文


    檔案 描述 大小格式瀏覽次數
    1383-5416_42(3)p349-358.pdf206KbAdobe PDF340檢視/開啟



    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - 回饋