English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 57517/91034 (63%)
造访人次 : 13452039      在线人数 : 293
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
搜寻范围 查询小技巧:
  • 您可在西文检索词汇前后加上"双引号",以获取较精准的检索结果
  • 若欲以作者姓名搜寻,建议至进阶搜寻限定作者字段,可获得较完整数据
  • 进阶搜寻

    jsp.display-item.identifier=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/987654321/46189

    题名: Electromagnetic imaging for shape and variable conductivity
    作者: Wei, Chien;丘建青;Chiu, Chien-ching
    贡献者: 淡江大學電機工程學系
    日期: 2004-09-01
    上传时间: 2010-03-26 21:10:51 (UTC+8)
    出版者: Wiley-Blackwell
    摘要: We consider the inverse problem of determining both the shape and the conductivity of a two-dimensional (2D) conducting scatterer from the knowledge of the far-field pattern of TM waves by solving the ill-posed nonlinear equation. Based on the boundary condition and measured scattered field, a set of nonlinear integral equations is derived and the imaging problem is reformulated into an optimization problem. Satisfactory reconstructions are achieved by the genetic algorithm. Numerical results demonstrate that, even when the initial guess is far away from the exact one, good reconstruction can be obtained. In addition, the effect of Gaussian noise on the reconstruction results is investigated. The numerical results show that multiple incident directions permit good reconstruction of shape and, to a lesser extent, conductivity in the presence of noise in measured data.
    關聯: International Journal of RF and Microwave Computer-Aided Engineering 14(5), pp.433-440
    DOI: 10.1002/mmce.20030
    显示于类别:[電機工程學系暨研究所] 期刊論文





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