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《Progress In Geophysics》 2005-03
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Multiscale syncretized acoustic impedance inversion using poststack seismic data

YANG Guang-da~(1,2),CHEN Zhan-wen~(3) (1.School of Geophysics and Information technicology,China University of Geosciences,Beijing 100083,China;2.Exploration Department,Jilin Oilfield,Songyuan 138001,China;3.School of Resources and Information,China University of Petroleum,Beijing 102249,China)  
According to optimum constrained inversion tactics,this paper applies wave equation multiscale inversion to inverse impedance of middle frequency band,and applies neural network(NN) to calibrate impedance of middle frequency band and syncretize the impedances for low,middle,high frequency band,so it can avoid the overlap of the impedances for low,middle,high frequency band and the error of inversion of low precision impedance of middle frequency band.The method has many advantages such as low dependence to initial model,high constringency speed, stable result,strong antinoise ability.
【CateGory Index】: P631.44;
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