Abstract: In order to impvoe the estimate precision of the seismic data instantaneous attributes (IA) in time-frequency domain and so much the better show the strata characteristics, the new method for the reassigned short-time Fourier transform of seismic data is applied. After applying this method to the seismic model and practical seismic data, a conclusion is made that the calculation precision is much higher than that of the method based on the short-time Fourier transform; and the method is very valid for studing the seismic data instantaneous attributes. Extending and the contacting of the strata can be clearly shown too.

Key words: instantaneous attributes, the reassigned short-time Fourier transform, time-frequency domain