利用时窗拟合法求取AVO属性剖面

时窗拟合法是利用ＣＤＰ道集内时窗振幅序列求取ＡＶＯ属性剖面（Ｐ、Ｇ剖面）的一种方法，它与传统的，利用单一样点振幅序列拟合法相比有如下优点：（１）能削弱由于ＣＤＰ道集同相轴波形不一致，相位不齐等因素所引起的Ｇ剖面假异常；（２）参考拟合的数据增多，统计意义明显，噪声的影响相对减弱；（３）由时窗拟合法求取的属性剖面相轴连续，波形光滑，信噪比有明显提高。

AVO attribute section processing by time-window fitting method

Time-window fitting method is used to produce AVO attribute section (P andG sections) by taking time-window amplitude sequences within CDP trace gathers.Compared with common fitting meth0ds which use amplitude sequence at a singlesample point, it has the f0l1owing advantages:. reducing the G-section false anomaly that is caused by nonuniform waveforms and out-phase 0f events within a CDP trace gather. reducing the noise effect because of more fitting data and m0re 0bvious statistical meaning. AV0 attribute section derived fr0m time-wind0w fitting method has continuous ref1ection legs, smooth waveforms and higher signal/noise ratio.