English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 54907/89265 (62%)
造訪人次 : 10599677      線上人數 : 26
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/987654321/55081


    題名: Time Domain Image Reconstruction for Homogenous Dielectric Objects by Dynamic Differential Evolution
    作者: Sun, Chi-Hsien;Chiu, Chien-Ching;Li, Ching-Lieh;Huang, Chung-Hsin
    貢獻者: 淡江大學電機工程學系
    關鍵詞: time domain inverse scattering;finite difference time domain;sub-gridding technique;dynamic differential evolution;homogenous dielectric cylinder
    日期: 2010-05
    上傳時間: 2011-08-10 20:09:21 (UTC+8)
    出版者: Philadelphia: Taylor & Francis Inc.
    摘要: This article presents the studies of the microwave image reconstruction of two-dimensional homogeneous dielectric cylinders that are based on the finite difference time domain method and dynamic differential evolution. For forward scattering, the finite difference time domain method is employed to calculate the scattered E-fields; for inverse scattering, the dynamic differential evolution scheme is utilized to determine the shape, location, and permittivity of the cylindrical scatterers with an arbitrary cross-section. The subgirdding technique is implemented for the finite difference time domain code in order to more smoothly model the shape of the cylinder. In addition, in order to more effectively describe an unknown cylinder with an arbitrary cross-section during the course of searching, the closed cubic-spline expansion is adopted to represent the scatterer contour instead of the frequently used trigonometric series. Numerical results demonstrate that, even when the initial guess is far from exact, good reconstruction can be obtained. In addition, the effects of Gaussian noise on the reconstruction results are investigated. Numerical results show that even the measured scattered fields are contaminated with Gaussian noise, and dynamic differential evolution is able to yield good reconstructed quality.
    關聯: Electromagnetics 30(4), pp.309-323
    DOI: 10.1080/02726341003712491
    顯示於類別:[電機工程學系暨研究所] 期刊論文

    文件中的檔案:

    檔案 描述 大小格式瀏覽次數
    0272-6343_30(4)p309-323.pdf10405KbAdobe PDF2檢視/開啟
    index.html0KbHTML297檢視/開啟

    在機構典藏中所有的資料項目都受到原著作權保護.

    TAIR相關文章

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