Postack Depth Migration with constant velocity. ths algorith is well known as Gazdag Migration. Hope it will help

用于地震勘探的偏移和反演 时间偏移 深度偏移-For the inversion of seismic exploration of the offset and time offset depth migration

本程序可以使用一个模型得到一个零偏移距剖面，即自击自收剖面。得到的记录可以用于做叠后深度偏移。-This code is used to getting a zero-offset record.the record we get can be used in post-stack depth migration.