物探与化探Issue(4)：842-847,6.DOI:10.11720/wtyht.2015.4.30
基于Cadzow滤波法压制线性干扰
Linear interference suppressed by Cadzow filter method
摘要
Abstract
In the low signal⁃to⁃noise ratio seismic data,linear interference suppression is one of the key processing chains.The tradition⁃al method of linear interference suppression in frequency domain tends to generate the phenomena of aliasing and earthworms.Therefore, the authors propose a filtering method based on Cadzow to suppress linear interference.Firstly,the seismic data will be transformed by linear function in the time⁃space domain.Secondly,according to the Cadzow filtering method,a two⁃dimensional Hankel matrix is crea⁃ted,and then singular value decomposition is run.Finally,by means of reducing the rank of matrix, linear interference is suppressed.The theoretical model and field data experiments show that the method can effectively remove linear noise and protect the effective wave,thus significantly improving the signal⁃to⁃noise ratio of pre⁃stack seismic data.关键词
线性干扰/线性动校正/奇异值分解/Cadzow滤波Key words
linear interference/linear NMO/singular value decomposition/Cadzow filter分类
天文与地球科学引用本文复制引用
曹中林,李振,陈爱萍,杨海涛,陈波..基于Cadzow滤波法压制线性干扰[J].物探与化探,2015,(4):842-847,6.基金项目
中国石油天然气集团公司科学研究与技术开发项目 （）
