基于S变换的随机噪声压制方法
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摘要
S变换是近年来发展起来的一种时频分析方法,本文首先通过设计理论模型测试S变换对非平稳信号的分辨能力,然后将S变换引入对地震资料随机噪声的压制中去,测试了S变换压制随机噪声的效果.研究表明:S变换是一种有效的时频分析方法,并可以很好地压制叠前地震资料的随机噪声.
S transformation is a time-frequency analysis method developed in recent years.In this paper we design models to test its ability to distinguish non-stationary signals,and introduce S transformation into attenuating random noise,and test the effect of S transform in attenuating random noise.The result shows that S transformation is an effective time-frequency analysis method and can work well to attenuate random noise of pre-stack seismic data.
S transformation is a time-frequency analysis method developed in recent years.In this paper we design models to test its ability to distinguish non-stationary signals,and introduce S transformation into attenuating random noise,and test the effect of S transform in attenuating random noise.The result shows that S transformation is an effective time-frequency analysis method and can work well to attenuate random noise of pre-stack seismic data.
引文
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[11] 刘喜武,年静波,黄文松.利用广义S变换提取地震旋回的方法[J].石油物探,2006,45(2) :130～134． Liu X W,Nian J B,Huang W S.Seismic cycles extraction using generalized S-transform[J].Geophysical Prospecting for Petroleum,2006,(2) : 129～133．
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[13] Pinnegar C R,Eaton D W.Application of S transform to prestacknoise attenuation filtering[J].J.Geophys.Res.,2003,108(B9) :1～10．
[2] 刘喜武,张宁,勾永峰,等.地震勘探信号时频分析方法对比与应用分析[J].地球物理学进展,2008,23(3) :743～753． Liu X W,Zhang N,Gou Y F,et al.The comparison and application of time-frequency analysis methods to seismic signal [J].Progress in Geophysics,2008,23(3) :743～753．
[3] Stockwell R G,Mansinha L,Lowe R P.Localization of the complex spectrum: the S transform [J].IEEE Transactions on Signal Processing,1996,44(4) :998～1001．
[4] 刘喜武,刘洪,李幼铭,等.基于广义S变换研究地震地层特征[J].地球物理学进展,2006,21(2) :440～451． Liu X W,Liu H,Li Y M,etal.Study on characteristics of seismic stratigraphy by generalized S-transform[J].Progress in Geophysics,2006,21(2) : 440～451．
[5] 高静怀,陈文超,李幼铭,等.广义S变换与薄互层地震响应分析[J].地球物理学报,2003,46(4) :526～532． Gao J H,Chen W C,Li Y M,et al.Generalized S transform and seismic response analysis of thin interbeds[J].Chinese Journal of Geophysics,2003,46(4) :526～532．
[6] Pinnegar C R,Mansinha L.The S-transform with windows of arbitrary and varying shape [J].Geophysics,2003,68(1) :381～385．
[7] 邹文,陈爱萍,贺振华,等.基于S变换的地震相分析技术[J].石油物探,2006,45(1) :48～53． Zou W,Chen A P,He Z H,et al.Seismic facies analysis based on S-transform[J].Geophysical Prospecting for Petroleum,2006,45(1) : 48～53．
[8] 李可恩,张宇生,赵会欣.广义S变换在煤田地震勘探中的应用[J].勘探地球物理进展,2009,32(1) :40～43． Li K E,Zhang Y S,Zhao H X.Application of generalized S transform in coalfield seismic exploration [J].Progress in Exploration Geophysics,2009,32(1) : 40～43．
[9] 刘喜武,年静波,刘洪.基于广义S变换的地震波能量衰减分析[J].勘探地球物理进展,2006,29(1) :20～24． Liu X W,Nian J B,Liu H.Generalized S-transform based seismic attenuation analysis [J].Progress in Exploration Geophysics,2006,29(01) :20～24．
[10] 刘喜武,年静波,刘洪.基于广义S变换的吸收衰减补偿方法[J].石油物探,2006,45(1) :9～14． Liu X W,Nian J B,Liu H.Generalized S-transform based compensation for stratigraphic absorption of seismic attenuation [J].Geophysical Prospecting for Petroleum,2006,45(2) :9～15．
[11] 刘喜武,年静波,黄文松.利用广义S变换提取地震旋回的方法[J].石油物探,2006,45(2) :130～134． Liu X W,Nian J B,Huang W S.Seismic cycles extraction using generalized S-transform[J].Geophysical Prospecting for Petroleum,2006,(2) : 129～133．
[12] 熊晓军,贺振华,黄德济,等.广义S变换在地震高分辨处理中的应用[J].勘探地球物理进展,2006,29(6) :415～418． Xiong X J,He Z H,Huang D J,etal.Application of generalized S transform in seismic high resolution processing[J].Progress in Exploration Geophysics,2006,29(6) :415～418．
[13] Pinnegar C R,Eaton D W.Application of S transform to prestacknoise attenuation filtering[J].J.Geophys.Res.,2003,108(B9) :1～10．
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