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- W2350356077 abstract "Traditional methods for wave field separation typically assumed that the waves propagated uniformly with an unvarying wavelet shape and amplitude,but this assumption broke down in the presence of irregular spatial sampling,event truncations,wavelet variations,and noise.To eliminate their effects,it presented a method for wave field separation: Each event was regarded to propagate independent amplitude and independent arrival time.An optimum iterative method was used which concluded the nonlinear least square method and two eigenvalues at each step.A event with some character is stripped from the data at one time.As stronger events are predicted and removed,weaker events then become visible and can be modeled in turn.As each new event is approximately modeled,the fitting for all previously removed events is then revisited and updated.Iterations continue until the wave selection is finished.The method is suitable for all wave fields.As VSP data sets are relatively low,there is no limitation for using the method.The real-data processing demonstrates that this iterative approach can have better result for VSP wave-field separation than conventional techniques.It is of significance to improve the processing accuracy of 3D VSP data." @default.
- W2350356077 created "2016-06-24" @default.
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- W2350356077 date "2011-01-01" @default.
- W2350356077 modified "2023-09-26" @default.
- W2350356077 title "3D VSP Wave Field Separation by Nonlinear Least-squares Method" @default.
- W2350356077 hasPublicationYear "2011" @default.
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