椭圆展开法共炮点道集速度分析方法

 以椭圆展开理论为基础，本文提出了基于共炮点道集数据的速度分析方法，给出了相应的速度分析流程；通过选定速度范围，采用椭圆展开并相干叠加的方法，利用共炮点道集求取每一速度的零炮检距叠加剖面；对得到的零炮检距叠加剖面进行选排形成共法向出射点速度谱，按照能量最大准则确定每一个法向出射点的速度；进而利用拾取的速度求取真正的零炮检距叠加剖面。该速度分析方法无需预先抽取速度分析道集，避免了常规速度分析中共反射点弥散的问题。模型试算表明了该方法的正确性和有效性。

Common shot gather velocity analysis based on the elliptic development method

Based on the elliptic development theory,a new method for common shot gather velocity analysis was proposed and the \esponding workflow was introduced in this paper.At first for selected velocity range,based on common shot gathers the elliptic development and coherent stacking were used to calculate zero offset stacking section for every velocity,secondly by sorting the calculated zero offset stacking sections,the common normal emergence point velocity spectrum were generated,according to the maximum energy...