循环中值滤波在消除可控震源地震资料噪声中的应用  

Application of Circulating Median Filtering in Eliminating Vibroseis Information Noise

作　　者：张怿平[1] 夏洪瑞[1] 董江伟[1] 

机构地区：[1]中国石化集团江汉石油管理局地理物理勘探公司,湖北潜江433100

出　　处：《江汉石油职工大学学报》2009年第2期93-96,共4页Journal of Jianghan Petroleum University of Staff and Workers

摘　　要：中值滤波是地震资料去噪处理中的常用工具,由于其对去噪资料有较严格的要求,使去噪效果不甚理想。可控震源地震资料正好满足中值滤波的应用前提,但又存在道数少,边界效应所占比例大的缺陷。根据可控震源资料的特点,提出了将去噪记录横向首尾相连,然后进行中值滤波,以克服边界效应的循环中值滤波方法。理论模型测试和实际可控震源资料处理证明了这种方法的可行性。Ahhough mid-value filtering is often used to eliminate seismic information noise, it does not have good effect on noise elimination because of its high requirements for noise-eliminated information, Vibroseis informtion just meets the premise of applying median filtering. However, it has fewer traces and larger proportion of boundary effect. According to the characteristics of vibroseis information, the authors propose circulating median filtering approach that noise-elimiinted records are both cormected horizontally before median filtering to overcome boundary effect. Theoretical model tests and practical vibroseis information processing have proved the feasibility of this aPProach.

关 键 词：中值滤波 应用条件 边界效应 首尾相连 循环中 值滤波 

分 类 号：TP391.42[自动化与计算机技术—计算机应用技术]