Abstract：Multiple elimination is a key step in seismic data processing. One of common methods is using Radon transform to attenuate multiples based on curvature difference of primaries and multiples in the image domain. The image domain can be prestack time or depth domain after migration. Considering the capability to process complex medium and efficiency required by processing approach, we propose high-resolution Radon transform based on the CSP (common scattering point) gathers to eliminate offset range. This method maps CMP gathers to CSP gathers, which have higher folds and wider offset range only using rough velocity field. In order to better eliminate multiples, we apply sparse constraints to hyperbolic Radon transform in CSP gathers, which can provide better focus of velocity spectrum. Compared with multiple elimination method in the CMP gather, the method based on CSP gather can avoid the assumption of layered media and better process complex media even under the hyperbolic trajectory. Synthetic and real data examples demonstrate that the proposed method can better focus and separate of primary and multiple waves in the velocity spectrum.
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