多尺度滤波器的瑞利波提取和验证
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摘要
通过分析瑞利波的特性,提出了基于多尺度滤波器提取瑞利波的方法,主要应用于地面目标探测。在此应用背景下,通过实际的震动系统采集数据,设计出实验中需要的多尺度滤波器,分析处理并提取出瑞利波。通过其频率分布、相速度、振幅衰减规律与实际参数的对比来验证多尺度滤波器提取方法的有效性。结果与实际各项参数一致,证明此方法是可行的。
Raleigh wave characteristics are analyzed and extracted based on multi-scale filter,which is mainly applied to the detection of ground targets. Data is collected by actual vibration system and the multi-scale filter is designed,which is required in the experinent. Finally,the Raleigh wave is extracted to process and analyze,which verifies the feasibility of method to multiscale extraction filter by comparing the frequency distribution,the phase velocity and the amplitude attenuation law. Simulation results are consistent with actual parameters,which showthat the proposed method is feasible.
Raleigh wave characteristics are analyzed and extracted based on multi-scale filter,which is mainly applied to the detection of ground targets. Data is collected by actual vibration system and the multi-scale filter is designed,which is required in the experinent. Finally,the Raleigh wave is extracted to process and analyze,which verifies the feasibility of method to multiscale extraction filter by comparing the frequency distribution,the phase velocity and the amplitude attenuation law. Simulation results are consistent with actual parameters,which showthat the proposed method is feasible.
引文
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[8]Szendrei ME.The frequency content and attenuation of seismic w avelets along the surface of different types of soil[J].Pure and Applied Geophysics,1960,46(1):47-48.
[2]宋先海,李瑞有,顾汉明.瑞利波勘探理论及其应用[M].北京:中国水利水电出版社,2010:2,38,54.
[3]杨福生.小波变换的工程分析与应用[M].北京:科学出版社,2000:3-4,102-104.
[4]张德丰.MATLAB小波分析[M].北京:机械工业出版社,2012:223-224.
[5]李响,颜冰,周穂华.基于直达波与地声界面波时延的目标定位方法[J].探测与制导学报,2012,32(6):51-52.
[6]刘强.基于瑞雷波理论的公路无损检测方法研究[D].西安:长安大学,2009:14-16.
[7]熊章强,周竹生,张大洲.地震勘探[M].长沙:中南大学出版社,2010:39-40.
[8]Szendrei ME.The frequency content and attenuation of seismic w avelets along the surface of different types of soil[J].Pure and Applied Geophysics,1960,46(1):47-48.
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