摘要
在有工业频率干扰的自电测井曲线中,目前去除干扰的方法主要有数字陷波器、自适滤波器和小波阈值去噪等。本文在分析自电测井曲线和工业频率干扰信号特点的基础上,利用ICA技术来消除自电测井曲线中的工业频率干扰,并与常规方法进行比较。结果表明,ICA在消除干扰的同时,能够保持有效信号,有较好的应用前景。
The spontaneous potential curves often contain the power interferences,and currently the conventional methods to remove the power interference are the digital notch filter,the adaptive filter and the wavelet threshold filtering.Based on the analysis of the characteristics of the spontaneous potential curves and the power interferences,the ICA technique is used to eliminate the power interferences,and the results are compared with the results from the conventional methods.The comparative results show that the ICA has the good effects to remove the power interferences and to preserve the signals,which will have preferable application to improve the signal-noise ratio.
出处
《工程勘察》
2013年第1期92-96,共5页
Geotechnical Investigation & Surveying
