数学物理学报 ›› 2014, Vol. 34 ›› Issue (1): 186-192.

• 论文 • 上一篇    下一篇

求解热源识别问题的修正吉洪诺夫正则化方法

赵振宇|由雷   

  1. 广东海洋大学理学院 广东 湛江 524088
  • 收稿日期:2012-10-12 修回日期:2013-09-30 出版日期:2014-02-25 发布日期:2014-02-25
  • 基金资助:

    国家自然科学基金(11201085)资助.

A Modified Tikhonov Regularization Method for Identifying an Unknown Source in the Heat Equation

 ZHAO Zhen-Yu, YOU Lei   

  1. College of Science, Guangdong Ocean University, Guangdong Zhanjiang |524088
  • Received:2012-10-12 Revised:2013-09-30 Online:2014-02-25 Published:2014-02-25
  • Supported by:

    国家自然科学基金(11201085)资助.

摘要:

该文研究了一个热源识别问题, 通过引入修正吉洪诺夫方法来处理问题的不适定性, 在一种先验和一种后验参数选取准则下,
分别获得了问题的误差估计. 数值例子进一步验证了方法的有效性和稳定性.

关键词: 不适定问题, 未知源, 热方程, 正则化方法, 偏差原理

Abstract:

In this paper, we consider the problem for determining the unknown source in the heat equation. A modified Tikhonov regularization method is presented to deal with the illposedness of the problem and error estimates are obtained with an a priori strategy and an a posteriori choice rule to find the regularization parameter. Numerical tests show that the proposed method is effective and stable.

Key words: Ill-posed problem, Unknown source, Heat equation, Regularization method, Discrepancy principle, Hilbert scales

中图分类号: 

  • 47A52