A Ghost Wave Removal Method Based on Low-Rank Constraints

Abstract

This invention discloses a ghost wave removal method based on low-rank constraints, comprising: acquiring seismic data; rearranging the seismic data to obtain a three-dimensional ghost wave-containing data volume; performing a Fourier transform on the three-dimensional ghost wave-containing data volume to obtain frequency domain data; performing a ghost wave removal operation based on the frequency domain form to obtain a frequency domain rate data volume; and transforming the frequency domain rate data volume to obtain the ghost wave removal result. This invention departs from traditional ghost wave removal algorithms, modifying the original shot-by-shot ghost wave removal process along the survey line direction. To improve the accuracy of the processing results and eliminate artifact interference caused by conventional methods, the proposed method incorporates the lateral continuity of the data, introducing low-rank constraints to improve the continuity of the data perpendicular to the survey line direction. The ghost wave removal algorithm with low-rank constraints effectively improves the accuracy of the final result, and compared with conventional methods, the proposed method has higher robustness.

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