Method and system for suppressing single frequency interference

By combining frequency-wavenumber domain transform and Hough transform with compressed sensing, single-frequency interference in seismic data is accurately located and removed, solving the problem of poor single-frequency interference suppression in existing technologies and achieving efficient interference removal and signal preservation.

CN122345889APending Publication Date: 2026-07-07ANHUI UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ANHUI UNIV OF SCI & TECH
Filing Date
2026-04-23
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

Existing technologies are insufficient to effectively suppress strong linear single-frequency interference waves that are vertically and obliquely distributed in seismic exploration, resulting in a reduced signal-to-noise ratio and affecting the accuracy of seismic data processing and geological interpretation.

Method used

By employing frequency-wavenumber domain transformation, Hough transform, energy zeroing, and compressed sensing methods, the location of single-frequency interference stripes is accurately identified, and spectrum recovery is performed to remove interference while retaining the effective signal.

Benefits of technology

It significantly improves the signal-to-noise ratio and clarity of seismic data, enhances the suppression efficiency and processing reliability of single-frequency interference, and ensures the integrity and accuracy of the data.

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Abstract

The present application belongs to the technical field of seismic signal processing, and particularly relates to a method and system for suppressing single-frequency interference, obtaining a seismic shot gather to be processed; performing frequency-wavenumber domain transformation on the seismic shot gather to obtain a first frequency-wavenumber domain amplitude spectrum, and saving phase information of each time sampling point in the transformation process; performing 3*3 small-scale smoothing processing on the first frequency-wavenumber domain amplitude spectrum to improve the signal-to-noise ratio; performing Hough transformation on the smoothed amplitude spectrum to identify the stripe position corresponding to the single-frequency interference; performing energy zeroing processing on the stripe and the surrounding area of the first frequency-wavenumber domain amplitude spectrum according to the stripe position and a preset blank band length to obtain a second frequency-wavenumber domain amplitude spectrum.
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