压制50Hz干扰波的地震资料处理方法  

A new seismic data processing method for suppressing 50 Hz interference wave

作　　者：智敏[1] 张广忠[1] 张孝文[1] 薛海飞[2] 

机构地区：[1]煤炭科学研究总院西安研究院,陕西西安710054 [2]中国矿业大学资源学院,江苏徐州221008

出　　处：《煤田地质与勘探》2010年第6期71-74,共4页Coal Geology & Exploration

摘　　要：压制50Hz工业电干扰,通常在频率域采用陷波器进行滤波,该方法在压制50Hz干扰信号的同时也损伤了有效信号中的50Hz成分,从而降低了地震资料的品质。利用迭代法对初至波之前的信号进行分析,求取50Hz干扰波的振幅和相位特性,对50Hz干扰波进行压制。实际应用效果表明,该方法能够很好地压制50Hz干扰波,且不对有效信号产生伤害。The method of suppressing 50 Hz industrial interference is mainly to use notch filter to filter in the fre-quency domain,which not only suppresses signals of 50 Hz interference,but also damages the effective signal,thereby degrades the quality of seismic data.In this paper,the interference amplitude and phase characteristics of the 50 Hz industrial noise were obtained by using the iterative method to analyze the signal before the first break wave.The practical application shows that this method can effectively suppress the 50 Hz interference and does not harm the effective signals.

关 键 词：50Hz干扰波 迭代法 地震资料 相位特性 振幅特性 

分 类 号：P631[天文地球—地质矿产勘探]