Separating P-P and P-SV wave by parabolic Radon transform with multiple coherence

Several methods are developed for separating PP wave and P-SV wave from the multiwave multicomponent seismic data.Parabolic Radon transform is an effective method.But the aliasing phenomena will appear and depress the quality of wave filed separation in the processing procedure of summing discrete amplitude.We introduced the algorithm of multiple coherences into the processing procedure,and developed new separation method of Parabolic Radon transform with multiple coherence.The new method can choose suitable signal into the summation procedure depending on the similarity level value of signals evaluated by the coherence,and depress the aliasing phenomena.We tested the method using the synthetic seismogram and achieved nice result.