基于小波变换的矿山微震信号滤波方法研究
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摘要
基于小波变换的多尺度分析思想,针对矿山微震信号具有频带较宽、谱成分丰富的特性,提出了对不同频率范围的信号和噪声进行滤波处理的方法。利用该方法可将噪声与信号分离以及将不同频段信号分解,从而达到滤波的目的。实验结果表明,该小波变换方法能够有效去除微震异常信号的噪声,可应用于微震信号的预处理。
Based on the multi-scale analysing idea of wavelet transform,pointing at the character that the mine microseimic signals have wide frequency bands and abundant spectrum compositions.This paper presents a filtering method for signal and noise in different freiuency scope,using this method,we can separate the noise from the signal and decompose the signals which have different fiequency bands in order to filter the signals.The results of experiment show that the wavelet transform method can get rid of the noise in the microseismic signals and it can be applied to the pre-processing of microseimic signals effectively.
Based on the multi-scale analysing idea of wavelet transform,pointing at the character that the mine microseimic signals have wide frequency bands and abundant spectrum compositions.This paper presents a filtering method for signal and noise in different freiuency scope,using this method,we can separate the noise from the signal and decompose the signals which have different fiequency bands in order to filter the signals.The results of experiment show that the wavelet transform method can get rid of the noise in the microseismic signals and it can be applied to the pre-processing of microseimic signals effectively.
引文
[1]潘一山.矿震的发生和破坏规律研究(博士后出站报告)[R].北京:中国地震局地质研究所,2003:1.
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[3]潘泉,等.小波滤波方法及应用[M].北京:清华大学出版社,2005.
[4]孔祥茜,吴继伟,岳继光.地震信号小波变换的去噪方法[J].计算机辅助工程,2005,3(14).
[5]陆菜平,等.岩体微震监测的频谱分析与信号识别[J].岩土工程学报,2005,7(3):18-26.
[6]董长虹.Matlab小波分析工具箱原理与应用[M].北京:国防工业出版社,2004.
[2]刘明才.小波分析及其应用[M].北京:清华大学出版社,2005.
[3]潘泉,等.小波滤波方法及应用[M].北京:清华大学出版社,2005.
[4]孔祥茜,吴继伟,岳继光.地震信号小波变换的去噪方法[J].计算机辅助工程,2005,3(14).
[5]陆菜平,等.岩体微震监测的频谱分析与信号识别[J].岩土工程学报,2005,7(3):18-26.
[6]董长虹.Matlab小波分析工具箱原理与应用[M].北京:国防工业出版社,2004.
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