本文提出一种按速度模型计算绕射波射线旅行时和进行绕射归位的方法。
This paper presents a method for calculating travel time of diffracted wave from velocity model and for making diffraction migration.
求解寻迹方程，便得到曲面绕射线的轨迹和边缘绕射点的位置，从而可以计算它的绕射场。
By solving these equations, the diffraction trace of a curved surface and the position of the edge's diffraction point are determined so that the diffraction field can be obtained.
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