计算物理 ›› 2000, Vol. 17 ›› Issue (6): 602-610.

• 论文 • 上一篇    下一篇

Abel变换数值反演的离散正则化方法

肖庭延, 宋金来   

  1. 河北工业大学文理学院, 天津 300130
  • 收稿日期:1999-05-31 修回日期:2000-01-20 出版日期:2000-11-25 发布日期:2000-11-25
  • 作者简介:肖庭延(1943~),男,湖南,教授,从事应用数学方面的研究.
  • 基金资助:
    河北省自然科学基金资助项目

A DISCRETE REGULARIZATION METHOD FOR THE NUMERICAL INVERSION OF ABEL TRANSFORM

XIAO TING-yan, SONG Jin-lai   

  1. Hebei University of Technology, Tianjin 300130, P R China
  • Received:1999-05-31 Revised:2000-01-20 Online:2000-11-25 Published:2000-11-25

摘要: 基于Tikhonov的正则化思想,将Abel变换的理论反演公式与对数值求导的离散正则化处理以及带权的Gauss型积分相结合,给出了Abel变换数值反演的一个新算法,并进行了理论分析与数值实验。结果表明:该算法具有精度高、数值稳定等优点。

关键词: Abel变换, 数值反演, 离散正则化, 带权Gauss积分公式

Abstract: Based on Tikhonov's Regularization theory and the theoretical formula of the Abel inversion, a discreted regularization algorithm is proposed for the numerical inversion of Abel transform by integrating the regularized treatment on numerical diffrentiation with the weighted Gauss-type integral. The numerical test and the comparision study are made and show that the algorithm possesses the advantages of high accuracy, good numerical stability and practicability.

Key words: Abel transform, numerical inversion, discrete regularization method, weighted Gauss-type integral

中图分类号: