计算物理 ›› 1992, Vol. 9 ›› Issue (1): 29-34.

• 论文 • 上一篇    下一篇

时域上反演波动方程系数的G-L方法及差分计算

刘继军, 郑家茂   

  1. 东南大学数力系, 南京 210018
  • 收稿日期:1990-12-07 修回日期:1991-08-14 出版日期:1992-03-25 发布日期:1992-03-25

COEFFICIENT INVERSION FOR A WAVE EQUATION WITH DIFFERENCE COMPUTATION ON TIME DOMAIN

Liu Jijun, Zheng Jiamo   

  1. Southeast University NanJing 210018
  • Received:1990-12-07 Revised:1991-08-14 Online:1992-03-25 Published:1992-03-25

摘要: 本文先用简洁的方法导出直接联系时域上附加信息和待定系数的G-L方程,进而给出差分格式并编程计算。结果表明本文算法有较好的稳定性和收敛性。

关键词: G-L方程, 时域, 特征线积分, 差分格式

Abstract: This paper considers the coefficient inverse problem of 1-D wave equation. Firstly we obtain the G-L equation which gives the relationship between assiatant information on time domain and the coefficient to be sought. Then both discrete scheme and numerical examples are given. Numerical results show our method is well-posed.

Key words: G-L equation, characteristics integral, differencing scheme