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• W2123451623 abstract "Many natural phenomena, including geologic events and geophysical data, are fundamentally nonstationary. They may exhibit stationarity on a short timescale but eventually alter their behavior in time and space. We developed a 2D [Formula: see text] adaptive prediction filter (APF) and further extended this to a 3D [Formula: see text] version for random noise attenuation based on regularized nonstationary autoregression (RNA). Instead of patching, a popular method for handling nonstationarity, we obtained smoothly nonstationary APF coefficients by solving a global regularized least-squares problem. We used shaping regularization to control the smoothness of the coefficients of APF. Three-dimensional space-noncausal [Formula: see text] APF uses neighboring traces around the target traces in the 3D seismic cube to predict noise-free signal, so it provided more accurate prediction results than the 2D version. In comparison with other denoising methods, such as frequency-space deconvolution, time-space prediction filter, and frequency-space RNA, we tested the feasibility of our method in reducing seismic random noise on three synthetic data sets. Results of applying the proposed method to seismic field data demonstrated that nonstationary [Formula: see text] APF was effective in practice." @default.
• W2123451623 created "2016-06-24" @default.
• W2123451623 creator A5022942868 @default.
• W2123451623 creator A5034632777 @default.
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• W2123451623 date "2015-01-01" @default.
• W2123451623 modified "2023-10-16" @default.
• W2123451623 title "Adaptive prediction filtering in <i>t-x-y</i> domain for random noise attenuation using regularized nonstationary autoregression" @default.
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• W2123451623 doi "https://doi.org/10.1190/geo2014-0011.1" @default.
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