高阶谱混合方法地震子波估计及处理
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摘要
凭借高阶累积量对噪声的不敏感性,依据地震记录高阶谱中包含的子波相位、幅值信息,提出了基于双谱和三谱混合的子波恢复方法,并对理论合成记录进行子波估计及处理模拟试验,其结果论证了该方法的可行性.同时,用本文介绍的方法对野外采集的地震资料进行处理后,其分辨率明显提高,说明了高阶谱技术在资料处理方面有相当大的潜力.
t Wavelet estimation method that based on hybrid high-order spectrum is brought forward, depending on high-order cumulant little sensitivity towards noises, according to wavelet's phase and magnitude information that contained in high-order statistics of seismic signal, and the feasibility of the method is demonstrated by testing wavelet estimation and processing simulation with computer. At the same time, field data resolving power improved by processing with the method that introduced in the paper, so it can be said that high-order spectrum technique possess much potential on aspect of seismic data processing.
t Wavelet estimation method that based on hybrid high-order spectrum is brought forward, depending on high-order cumulant little sensitivity towards noises, according to wavelet's phase and magnitude information that contained in high-order statistics of seismic signal, and the feasibility of the method is demonstrated by testing wavelet estimation and processing simulation with computer. At the same time, field data resolving power improved by processing with the method that introduced in the paper, so it can be said that high-order spectrum technique possess much potential on aspect of seismic data processing.
引文
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[2] 尹成,伍志明,邓怀群.高阶统计量方法在地震勘探中的应用[J].地球物理学进展,2003,18(3):546~550.
[3] 张贤达.时间序列分析———高阶统计量方法[M].北京:清华大学出版社,1996:169~201.
[4] 唐斌,尹成.基于高阶统计的非最小相位子波恢复[J].地球物理学报,2001,44(3):404~410.
[5] SundaramoorthyG,RaghuveerM R,DianatS A.Bispectral re construction of signals in noise:Amplitude reconstruction is sues[J].IEEE Trans.AcousticsSpeech,SignalProcessing,1990,38:1297~1306.
[6] MatsuokaT,UlrychT J.Phase estimation using the bispec trum[J].Proc.IEEE,1984,72:1403~1411.
[7] PanR,NikiasC L.Phase reconstruction in the trispectrum do main[J].IEEE Trans.Acoustics,Speech,SignalProcessing,1987,35:895~897.
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