English

应用科学学报 ›› 1993, Vol. 11 ›› Issue (4): 297-302.

• 论文 • 上一篇    下一篇

二维电磁逆散射变形玻恩迭代法的改进

彭仲秋   

  1. 电子科技大学
  • 收稿日期:1992-03-23 修回日期:1992-09-14 出版日期:1993-12-31 发布日期:1993-12-31

IMPROVEMENT OF DISTORTED BORN ITERATIVE METHOD IN 2-D ELECTROMAGNETIC INVERSE SCATTERING

PENG ZHONGQIU   

  1. University of Electronic Sciencs and technology of China
  • Received:1992-03-23 Revised:1992-09-14 Online:1993-12-31 Published:1993-12-31

PDF

106

被引次数

10

摘要： 该文对二维剖面重建的变形玻恩迭代法提出一系列改进方法,包括提高求解正问题的精度和计算效率,采用二次差分正则化并用加权最小二乘法解正则化反演方程,以及利用先验知识预估初值和采用增频法.这些改进方法使反演迭代的收敛性以及解的稳定性和分辨率明显提高.

关键词: 电磁逆散射, 玻恩迭代法, 剖面重建, 正则化

Abstract: A number of effective procedures for improving the distorted Born iterative method are proposed, including the accurate and efficient solution of the direct problem, second-difference regularization, weighted least-squares solution, estimation of the initial guess by using a priori information and multiple-frequency scheme. The convergence and stability of the iterative solution and the resolution, of the reconstruction are improved significantly.

Key words: Born iterative method, electromagnetic inverse scattering, profile reconstruction, regularization