摘要
在波动方程有限差分数值模拟基础上，用波形记录残差平方并建立目标函数。对目标函数进行梯度优化，我们得出了介质速度的迭代公式。通过计算目标函数梯度我们可以对介质进行速度校正，从而获得反演解。经数值试验证明这是一种很有效的反演方法。
The objective function can be built based on the finite difference modeling for the wave equation. By optimizing the objective function with the gradient method the iterative formula about the medium velocity is obtained. According to the formula, the inversion solution can be derived. The numerical experiments show that the gradient inversion method is very effective.
出处
《物探化探计算技术》
CAS
CSCD
1996年第4期298-303,共6页
Computing Techniques For Geophysical and Geochemical Exploration
基金
地矿85重点研究项目
