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.
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.
出处
《应用科学学报》
CAS
CSCD
1993年第4期297-302,共6页
Journal of Applied Sciences
关键词
电磁逆散射
剖面重建
玻恩迭代法
electromagnetic inverse scattering, profile reconstruction, Born iterative method, regularization
