在讨论数字偏移系统“dsx200”以前要很好回顾一下偏移(migration)的意义是什么,并且了解一下在形成这个基本的地震校正程序之前做了些什么。恩德斯·鲁宾逊在勘探地球物理学会二十二届中西部勘探年会上的主旨演说中以下面这样明白的方式解释了偏移。“让我们来看一个速度为常数的介质。我们只要将记录时间乘上这个常速就可以转 Before discussing the digital offset system “dsx200”, it is good to recall what the meaning of migration is and to understand what was done prior to the formation of this basic seismic correction procedure. Enders Robinson explained the offset in the following clear way in his keynote address at the 22nd Midwest Exploration Annual Conference of the Exploration Geophysical Society. "Let’s take a look at a medium of constant velocity. We can simply multiply the recorded time by this constant velocity