广义S变换在地震信号特征信息提取中的应用
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摘要
基于S变换具有良好的时频聚焦性,将可灵活选取窗函数的广义S变换引入到地震信号特征信息提取中,系统研究广义S变换在地震信号局部刻画和总体描述中的应用。通过理论模型和实际资料的试算表明,广义S变换在特征信息提取方面是行之有效的,具有较强的抗干扰能力。同时可根据目标体的研究需要,合理选择瞬时频率振幅谱剖面、某频率段地震剖面和单频剖面来识别地震剖面中特征信息,为进一步地震资料处理和解释提供可靠依据。
Based on the good time-frequency focusing of S-transform, this paper introduces the generalized S-transform (GST) into extraction of characteristic information of seismic signals, which can flexibly chose the window function, and systematically studies the application of GST to partial depiction and general description of seismic signals. The theoretic model and actual seismic data prove that GST is a feasible and effective method in extracting the characteristic information for its anti-interference ability. According to research goal, we can reasonably select instantaneous frequency amplitude-spectrum profile, frequency ranges seismic profile and single frequency seismic profile to identify the characteristic information, hence providing the reliable basis for the further processing and interpretation of seismic data.
Based on the good time-frequency focusing of S-transform, this paper introduces the generalized S-transform (GST) into extraction of characteristic information of seismic signals, which can flexibly chose the window function, and systematically studies the application of GST to partial depiction and general description of seismic signals. The theoretic model and actual seismic data prove that GST is a feasible and effective method in extracting the characteristic information for its anti-interference ability. According to research goal, we can reasonably select instantaneous frequency amplitude-spectrum profile, frequency ranges seismic profile and single frequency seismic profile to identify the characteristic information, hence providing the reliable basis for the further processing and interpretation of seismic data.
引文
[1]徐伯勋,白旭滨,于长青.地震勘探信息技术提取、分析和预测[M].北京:地质出版社,2001:73-78.
[2]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.
[3]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.
[4]PinnegarCR,MansinhaL.TheS-transformwithwindowsof arbitrary and varying shape[J].Geophysics,2003,68(1):381-385.
[5]Pinnegar C R,Mansinha L.Time local spectral analysis for non-stationary time series:the S-transform for noisy signals[J].FluctuationandNoiseLetters,2003,3(3):357-364.
[6]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.
[7]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.
[8]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):48-51.
[9]陈学华,贺振华,黄德济.基于广义S变换的信号提取与抑噪[J].成都理工大学学报,2006,33(4):331-335.
[10]熊晓军,贺振华.广义S变换在地震高分辨率处理中的应用[J].勘探地球物理进展,2006,39(6):415-418.
[2]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.
[3]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.
[4]PinnegarCR,MansinhaL.TheS-transformwithwindowsof arbitrary and varying shape[J].Geophysics,2003,68(1):381-385.
[5]Pinnegar C R,Mansinha L.Time local spectral analysis for non-stationary time series:the S-transform for noisy signals[J].FluctuationandNoiseLetters,2003,3(3):357-364.
[6]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.
[7]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.
[8]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):48-51.
[9]陈学华,贺振华,黄德济.基于广义S变换的信号提取与抑噪[J].成都理工大学学报,2006,33(4):331-335.
[10]熊晓军,贺振华.广义S变换在地震高分辨率处理中的应用[J].勘探地球物理进展,2006,39(6):415-418.
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