Blind source separation of picking first arrival based on second-order statistics
LI Yong1, CHEN Ming1, ZHANG Jian-yue2
1 College of Geophysics and Information Engineering,China University of Petroleum,Beijing,102249,China;
2 Research and Development Center,BGP Inc.China National Petroleum Corporation,Zhuozhou,Hebei,072751,China
Abstract：Noise reduction usually is conducted before first arrivals picking,which could damage effective signals.This article proposes an algorithm of blind source separation based on the second-order statistics.The method focuses on noise separation rather than noise removal.So there are no harms to effective signals.This idea might provide a new way for noise reduction.The algorithm of blind source separation based on the second-order statistics is applied to seismic data.The results show that the algorithm is effect,noises are separated and removed,and accurate first arrivals are picked up.
