用一点迭代法求差分反褶积算子的根

在波动方程有限差分偏移中，对每一个差分层的每一个地震道都需通过解一个一元二次方程求取一个绝对值小于1的反褶积算子的根。本文介绍一种一点迭代求根法，用这种方法计算差分反褶积算子的根，不仅提高了计算速度，而且还能保证波动方程有限差分偏移的精度。

Solving for the root of difference deconvolution operator byt single valued iteration method

In finite difference migration,we must solve for the root,whose absolute value is less than 1,of deconvolution operator of every trace in each layer,to which difference operation is applied,by solving an one-variable equation of second order, This paper recommends single valued iteration method for solving the root.Used in solving for the root of difference deconvolution operator, this method can not only speed up computing but also guarantee the accuracy of finite difference migration.