摘要
提出一种改进ICA去噪方法,可确定去噪后的信号幅值.用于消除瞬变电磁信号中的工频干扰,并与传统陷波滤波方法进行比较.实验结果表明,采用改进ICA去噪方法,在消除工频干扰的同时,能很好地保留信号的波形和特征,去噪效果明显优于陷波滤波方法.在较低信噪比下仍可有效地提取信号,具有实用价值.
An improved ICA denoising method is presented,to ascertain amplitude of denoised signal.This method was used to remove power interference in transient electromagnetic signal,and was compared with traditional notch filter.Data showed that wave and feature of desired signal were preserved while power interference was removed by this improved ICA denoising,markedly better than notch filter.This method was effective under lower SNR,and was practical.
出处
《北京师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2011年第1期35-39,共5页
Journal of Beijing Normal University(Natural Science)
关键词
瞬变电磁法
独立成分分析(ICA)
工频干扰
transient electromagnetic method
independent component analysis（ICA）
power interference
