摘要
基于特征值结构的相干体算法(C3算法)的核心思想就是用与水平时间切片的相关的相干值压制水平方向上介质连续性,凸显不连续性,因此具有最佳的横向(即水平)分辨率,而对倾角数据效果较差。为了改善倾向分辨率,本文提出一种用测线抽取数据进行计算的方式取代基本算法中面元抽取数据计算的方式。试算结果表明该算法真实有效,精度有较大的提高。
As a method of coherence algorithm based on eigenstructure,the core of C3 algorithmitsis suppressing continuity and emphasizing discontinuity of underground media by computing the coherence of time slices,and finally obtains both higher lateral resolution and lower dip resolution.To improve dip resolution,an improved C3 method,with computing covariance matrix by survey line instead of dealing with sliding panels is presented.The results show the new method has better resolution both in horizon and dip direction.
出处
《西北地震学报》
CSCD
北大核心
2009年第3期217-220,共4页
Northwestern Seismological Journal
关键词
地震勘测
C3相干算法
特征结构
协方差矩阵
测线
Seismic prospecting
C3 coherence algorithm
Eigenstructure
Covariance matrix
Survey line
