Tau—P变换偏移

TAU-P TRANSFORMATION MIGRATION

四川石油地调处

本文详细地讨论了叠后Tau—P偏移方法和实现步骤, 导出了Tau—P域“偏移交换”公式。我们从两个方面验证了该方法的正确性, 一是以点绕射双曲线为例, 说明方法所具有的收敛功能, 二是给出了Tau—P偏移与F—K偏移的等价证明。最后, 我们顺便讨论了Tau—P变换与二维傅氏变换的联系及转换关系。

In this paper, the technique ofτ-p post-stack migration and the procedure of its implementation were discussed in considerable detail and the formula of "migration transformation"in τ-p domain was also derived.The validity of this technique was verified in two aspects: one of which is to illustrate its convergence characteristics in terms of point diffraction hyperbola, the other is to prove that the τ-p migration and the F-K migration are in essense to be the same or "equivalent" . Lastly, the relationship between the τ-p transformation and the 2-D Fourier transformation, the relationship between their transform were talked over in passing.