Intra-array statics and phase corrections obtained by beamforming in the Short-Time Fourier Transform domain: Application to supergrouping [Электронный ресурс]

Авторы: Neklyudov D.   (ИНГГ СО РАН)   Bakulin A.     Dmitriev M.     Silvestrov I.   (ИНГГ СО РАН)  
дата публикации: 2018
​We present a method to correct for intra-array statics and phase variations pre-stack trace ensembles intended for local summation. We apply the proposed approach as an additional step before summing traces via supergouping. Corrections are derived from beamforming techniques applied in the short-time Fourier transform (STFT) domain performed independently for each frequency component. Beamforming allows to handle more complex variations of recorded signals than simple relative time shifts from trace to trace. Phase correction weights are calculated using SVD of the data matrix in the STFT domain. The proposed approach is demonstrated on synthetic and complex 3D land data from Saudi Arabia.
первоисточник: SEG Technical Program Expanded Abstracts (Houston, Texas, USA, 24-27 September, 2017)
страницы: 4991-4995
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