We revised frequency spectrum functions by using weighting factor - the distance between directcomponent and alternating component, and improved the acuity of focus measure curve.
With consideration of the effects of phase characteristics, directcomponent and digital truncation, a method for extracting wavelet near a well by using seismic and log data is proposed.
提出了一种利用地震和测井资料、综合考虑子波相位特性、直流分量和截断效应的影响，提取井旁子波的方法。
3
A new method to detect rotor cage fault of induction motor is presented, which monitors if the output power signal comprises a directcomponent and an alternating component or only a directcomponent.