Abstract:

Take consistent phase supposition as foundation, changes the object function value is changed through computing the signal phase to scann the phase of seismic record, the approach to the wavelet real shape constistent phase value sought, and the phase and the recorded amplitude spectrum synthesis seismic wavelet used, wavelet extraction realized. On the basis of common object function, new object function which more sensitive to the signal phase characteristic is added. And the way that multiobjective union scanning is applied to seek for statistical average , make wavelet phase characteristic more accurately and really, improve antiinterference ability at the same time.The practical value of method has been proved by estimating wavelet from practical data and deconvolution.

Key words: consistent phase, phase scan, seismic wavelet, equation modul, absolute kurtosis