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《Progress in Geophysics》 2009-01
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Random noise attenuation based on orthogonal polynomials transform for CMP gathers

XUE Ya-Ru1,LU Wen-Kai2,CHEN Xiao-Hong1,HUANG Rao1,MA Ji-tao1(1.China University of petroleum(Beijing),Beijing 102249,China;2.Department of Automation,Tsinghua University,Beijing 100084,China)  
A new random noise attenuation method is proposed based on orthogonal polynomials transform for NMO CMP gathers.After orthogonal polynomials transform,the CMP data are transformed to spectra of orthogonal polynomials coefficients,which describe the energy distribution of CMP data and can distinguish between effective waves and noises.The orthogonal polynomials order of effective waves is confirmed according to the energy variation with order increasing.This method can not only attenuate the noise but also preserve the AVO properties.The processing of synthetic and real data shows good results.
【Fund】: 国家高技术研究发展计划(863)(2006AA09A102-09)和(2007AA06Z229)资助
【CateGory Index】: P631.44
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