Abstract：The function of CMP stack in seismic data processing is to suppress random noise and eliminate multiple,but associated disadvantages are decreasing the resolution of seismic data and smearing the amplitude character.In order to improve the resolution of seismic data and the hi-fi of amplitude,many researchers have presented variety of fitting methods to replace CMP stack,but each fitting method has his own shortcomings,such as poor ability of improving S/N.Starting from applicanon aspect,the paper discussed the characters of zero-offset fitting in time-frequency and necessity of application of prestack elimination of different linear interference and multiple to marine high-resolution seismic data processing.The real data processing showed so long as the prestack noise-elimination well-done ,application of zero-offset seismictrace fitting in time-frequency domain to C;MP stack is favorable to improve lion and hi-fi of amplitude.seismic replace resolution and hi-fi of amplitude.
