Abstract：The common scattering-point trace gather within the given offset is obtained by taking the dual quadratic-surd travel time equation, the principle of prestack Kirchoff integral migration, and the number of scattering points. Then the trace gather undergoes velocity analysis, normal moveout correction and stack to bring seismic migrated section(This is called scattering point imaging. Common scattering point is equivalent to common reflection point and results in very High signalnoise ratio; besides it can be used to have correct velocity model. Consequently, the combinative use of common scattering point imaging, special noise elimination residual static correction and so on will be very significant to the processing of low S/N seismic data. The example proves the method very effective.
