佘山地磁信号的小波消噪处理

摘要

上海地铁9号线开通后,佘山地震基准台地磁观测受到严重影响,本文运用小波分析的方法,对被地铁9号线干扰的佘山地磁数据进行消噪处理,并将变换后得到的结果和没有地铁干扰的崇明地震台同一仪器观测的地磁数据进行时序变化和相关系数比较,消噪处理效果较明显.%The line 9 subway causes serious bad affect to the observation of geomagnetic signals at Sheshan Seismic Station, In this article, the method of wavelet transformation was used to process the affected data, and then compare the result to the same instrument that installed in Chongming Seismic Station by time-sequence and correlation coefficients. The examples in this paper prove that wavelet transformation is very effective in noise elimination.