College of Geo-exploration Science and Technology, Jilin University, Changchun 130026, China

In order to avoid the pseudo-frequency in the process of eliminating multiples and extracting velocity difference of hyperbolic Radon transform, which caused certain impacts on seismic data processing, the authors studied the curvature parameters and iteration numbers of least square hyperbolic Radon transform in time domain and figured out the optimum range of the parameter of 30 to 40 for curvature sampling and 6 to 10 for the iteration numbers. Synthetic model and real data tests show that proper setting of parameters could ensure the accuracy and reduce the computing time, which is beneficial for the application of hyperbolic Radon transform.