摘要
密集采样的瞬变电磁信号其中晚期信号一般较弱,常规的滤波方法有时难以取得好的效果。应用多尺度小波分析方法进行瞬变电磁信号的去噪处理,可有效地区分有用信号与干扰噪声,经试算得到了比较满意的去噪效果,是一种瞬变电磁信号去噪的可行实用的方法。
The late signal of high density TEM is very weak and the traditional filtering methods often fail to obtain satisfactory results. This paper hence proposes to apply the multi-scale wavelet analysis to eliminating noise from the transient electromagnetic signal. The processing results demonstrate that the wavelet analysis can separate the useful signal from noise effectively and hence serves as a useful and feasible method for elimination of noise from the transient electromagnetic signal.
出处
《物探与化探》
CAS
CSCD
2007年第B10期63-65,共3页
Geophysical and Geochemical Exploration
关键词
小波分析
瞬变电磁
时频分析
衰减曲线
信号消噪
wavelet analysis
TEM
time-frequency analysis
attenuation curve
signal noise elimination
