一种优化预测滤波压制随机噪声的方法  

A method for random noise attuation based on optimization prediction filter

作　　者：谢金娥[1] 刘志成[1] 吕秋玲[1] 

机构地区：[1]中国石油化工股份有限公司石油物探技术研究院,南京210014

出　　处：《地球物理学进展》2012年第3期1213-1218,共6页Progress in Geophysics

基　　金：中石化科技部项目"库东三维地震成像技术研究"(P11033)资助

摘　　要：针对低信噪比地震资料中的随机噪声干扰,提出了一种优化的预测滤波方法.通过对AR模型数学表达式进行改写,然后引入反褶积代价函数,最后推导得到压制随机噪声的递归算法.该算法实现了单道压制随机噪声,保护了有效信号的细节部分,比基于常规最小二乘代价函数的滤波算法收敛更快.通过模拟和实际地震资料验证表明,该方法能较好地压制低信噪比资料中的随机噪声干扰,同时能较好地保护有效地震信号.The paper proposed an optimization prediction filter to pressing random noise in low-S/N seismic meterial. Through modifying AR model mathmatics function, involving deconvolution cost, we developed recurrence algorithm to suppresing random noise. It better than quadratic constraint in convergence rate, and the algorithm achieved single-trace filter, protected effect signals ＇s detail part. Synthetic and real seismic meterial testing indicate this methods can suppress random noise effectively in low-S/N seismic meterial, at same time protecting effect signals well.

关 键 词：自适应 预测滤波 随机噪声 信噪比被动源 互相关 虚炮集记录 数值模拟 

分 类 号：P631[天文地球—地质矿产勘探]