Abstract：It is important to measure quality factor Q in seismic data processing and interpretation.In practice,the most commonly used estimation method of quality factor Q is the spectral ratio method.However,the window selection is always a main issue in this traditional spectral ratio method.With superior time-frequency characteristics and the Fourier spectrum of the improved generalized S-transform,we extract the corresponding instantaneous spectrum of upper and lower interfaces of formation.By fitting the relationship between frequency and amplitude ratio,we estimate finally the quality factor.Both numerical simulation and field data show the effectiveness of this method.
