| 摘要 |
Methods of processing seismic data to remove unwanted noise from meaningful reflection signals are provided for. Assembled seismic data are transformed from the offset-time domain to the time-slowness domain using a Radon transformation. An offset weighting factor x n is applied to the amplitude data, wherein 0 < n < 1. The coherent noise content of the transformed data is enhanced, and the primary reflection signal content diminished by filtering at least a subset of the transformed data. The filtered data are inverse transformed from the time-slowness domain back to the offset-time domain using an inverse Radon transformation, and an inverse of the offset weighting factor p n is applied to the inverse transformed data, wherein 0 < n < 1, to restore the amplitude data. The restored amplitude data of the filtered data are subtracted from the originally assembled amplitude data. The coherent noise content of the assembled amplitude data is diminished and the primary reflection signal content enhanced. |
