摘要
重点讨论了基于克希霍夫积分的波场外推方法预测水层多次波的方法原理及具体的数值实现.自适应减法是波动方程方法压制多次波的另一个重要方面,考虑到Monk提出的带约束的互均衡化算法在复杂模型情况下压制效果不是很理想,本文对其算法进行了改进,提出了基于矩形窗和海宁(hanning)窗的分段匹配算法,模型算例的处理结果表明,改进后的算法具有一定的优越性.
We focus on discussing the principle of predicting water layer multiple using the wave-equation extrapolation method, which is based on Kirchhoff integral, as well as the approach of the numerical realization. An important part in multiple suppression is the adaptive subtract algorithm. Considering the result of the constrained cross-equalization algorithm（CCA） is not so good, we improved it by matching the trace with rectangle or hanning windows. We process some synthetic data using CCA and the improved algorithm, respectively. Comparison of the results of the two methods shows that windows matching method is better than CCA to some degree.
出处
《地球物理学进展》
CSCD
北大核心
2009年第2期541-550,共10页
Progress in Geophysics
基金
国家863计划项目(2006AA09A102)资助
关键词
水层多次波
波场外推
自适应减法
带约束互均衡化
分段匹配
water layer multiple, wave-equation extrapolation, adaptive subtract algorithm, constrained crossequalization, segment matching
