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本文介绍一种称为“剔除拟合法”（DELFIT）的方法。它能够克服多次波并保留AVO现象，可以获得拟合零炮检距T0道P波剖面和AVO参数。该方法要求输入反射波经过动校正拉平后的CDP道集，以便采用边剔除边拟合的方法，使多次波及随机噪声基本上得到克服。此法可以拟合出不带动校拉伸、不带多次波的P波剖面。剔除拟合法的另一个优越性还在于它不受动校正速度的微小误差的影响，即使双曲线没有拉平，剔除拟合法对此也不敏感，照样能拟合出分辨率较高的P波剖面来。由此可见，此法是一种取代水平叠加的处理技术。
This article describes a method called DELFIT. It can overcome the multiples and keep the AVO phenomenon, and can obtain the fitted zero offset T0 P wave profile and AVO parameters. The method requires inputting the reflected wave into the CDP gathers after the level correction, so as to overcome the multiple-order and random noise by the edge-fitting edge fitting method. This method can be fitted out without driving school stretch, without multiple P wave profile. Another advantage of eliminating the fitting method is that it is not affected by the slight error of the moving correction speed. Even if the hyperbola is not leveled, the rejection fitting method is not sensitive to this, so that the P wave profile with high resolution can be fitted Come. This shows that this method is a superposition to replace the level of processing technology.