摘要
利用小波分析中的多尺度分解及信号消噪技术 ,对记录不清、信噪比小、震相无法辨认的地震信号进行处理。结果表明 :多尺度分解在弱震信号提取和弱震相的识别等方面有很好的效果。
Making use of muti-scale decomposition and signal noise-removing technique,the authors processed bad-recording,low signal-to-noise signal,which with unclear seismic phase.The result shows that wavelet analysis has good effects on drawing out weak seismic signal and picking its phases,but also has influence on magnitude value.
出处
《中国地震》
CSCD
北大核心
2004年第4期405-409,共5页
Earthquake Research in China
关键词
小波分析
多尺度分解
信号消噪
地震信号
Wavelet analysis Multi-scale decomposition Signal noise-removing Seismic signal