地磁观测数据中典型干扰识别与处理  

RESEARCH ON TYPICAL INTERFERENCE IDENTIFICATION AND PROCESSING METHODS OF GEOMAGNETIC OBSERVATION DATA

作　　者：杨学慧[1] 杨正纲[1] 姚休义[1] 王赟辉 YANG Xuehui;YANG Zhenggang;YAO Xiuyi;WANG Yunhui(Yunnan Earthquake Agency,Kunming 650224,China)

机构地区：[1]云南省地震局,云南昆明650224

出　　处：《高原地震》2020年第3期30-36,68,共8页Plateau Earthquake Research

基　　金：国家重点研发计划—典型活动断裂带密集综合台阵监测与研究应用示范(项目编号:2018YFC1503806);中国地震局监测预报司2020年度震情跟踪定向工作任务(项目编号:2020010425)联合资助。

摘　　要：通过对云南省地磁观测数据中典型干扰形态进行分类,使用一阶差分识别、参考分量斜率反算及线性插值等处理方法对仿真数据进行处理。利用干扰类型较多、干扰幅度较大的盈江地震台和西盟地震台的地磁数据进行效果检验,得出一套适用于地磁干扰自动识别及预处理的方法。该方法能在保证正常数据形态的基础上,将曲线中的台阶、尖峰、高压直流输电干扰和畸变等信号去除,实现典型干扰的识别与自动预处理。In this paper,the typical interference patterns of geomagnetic observation data in Yunnan Province are classified,and the simulation data are processed by first-order differential recognition,reference component slope inversion,linear interpolation and other processing methods.By using the geomagnetic data of Ying Jiang station and Xi Meng station,which have more types of interference and larger amplitude,a set of methods suitable for interference identification and automatic preprocessing of geomagnetic interference is obtained.On the basis of ensuring the normal data form,this method can remove the steps,spikes,high-voltage direct current transmission interference,distortion and other signals in the curve,so as to realize the interference identification and automatic preprocessing of the typical interference.

关 键 词：地磁观测 干扰识别 自动处理 

分 类 号：P318.6[天文地球—固体地球物理学]