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ANALYSIS AND FILTERING OF SURFACE WAVES IN SHALLOW WATER ENVIRONMENT USING S AND T-F-K TRANSFORM
ANALYSIS AND FILTERING OF SURFACE WAVES IN SHALLOW WATER ENVIRONMENT USING S AND T-F-K TRANSFORM
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机译:利用S和T-F-K变换对浅水环境中的表面波进行分析和滤波
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摘要
The various embodiments of the present invention provide a method for removing a Scholte waves and similar ground roll type waves from a seismic sea bottom data in a shallow water. The method comprises acquiring seismic sea bottom data in a shallow waters, applying a time-frequency-wave number (t-f-k) transform on the acquired seismic sea bottom data, identifying a time-frequency relationship of a surface wave based on a specific wave number, identifying a frequency-wave number relationship of a surface wave based on a specific time, designing a time varying frequency-wave number filter in the time-frequency-wave number domain to separate the surface wave, applying a time varying frequency-wave number filtering process to remove an undesired energy and inversing a filtered record by applying an inverse S-Transform operation and an inverse Fourier Transform operation.
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