Estimation of Q from VSP data with zero offset in wavelet domain
利用零偏移距VSP资料在小波域计算介质Q值

This paper is devoted to the estimation of Q-factor in dispersive medium from zero offset VSP data in the wavelet domain. Suppose that the source signature can be approximated by a wavelet with zero-phase, we obtain a formula with which one can calculate the Q-factor from VSP data in the wavelet domain. By taking a proper coordinate frame transform, our formula has a similar form with the counterpart for the source signature to be pulse. By using the method on synthetic VSP data, we estimate the Q which are nearly the same as model parameters. In addition our method can decrease the effect from near reflector.