摘要
计算量及计算机内存量过大是波动方程迭代反演中所面临的主要困难之一。本文就一维波动方程的情况提出一种有效的解决办法——震源函数变换法。该方法通过变换震源函数成为单位脉冲和选择反射系数作为求解参数,可以大大降低计算量,同时,梯度矩阵也不必再占有任何内存。
Too much computation and too big internal storage to be used are the main troubles we face in the iterative inversion of wave equation. In order to solve the troubles,we present source function transform method,an effective method for one-dimensional equation. Hence, computation can be greatly reduced by converting seismic source function into unit impulsive one and using reflection coefficient as solution parameter. What is more,gradient matrix may not be put into the internal storage.
出处
《石油地球物理勘探》
EI
CSCD
北大核心
1992年第3期343-350,共8页
Oil Geophysical Prospecting
关键词
波动方程
广义线性反演
层状介质
wave equation
generalized linear inversion
layered medium
