在叠前共深度点道集内各地震道的动、静校正误差很小的情况下，地震资料时间域水平叠加方法有较好的叠加结果。
The conventional stack method of seismic data gives quite good results when the errors of time corrections are small enough or the arrivals are near the same.
作为最具物理性的共炮点道集的波动方程叠前深度偏移，涉及庞大的波场外推计算量，计算极其耗时，效率较低。
As the most physical of the shot-profile wave equation pre-stack depth migration involving huge extrapolation calculation, the calculation is extremely time-consuming and less efficient.
利用CDP道集，可以直接获得共中心点叠加时间剖面或视深度剖面，由此可转换为法向深度剖面。
By using the CDP gather, common-mid-point stacked time section or apparent depth section can directly be obtained, which can be converted into normal depth section.
叠前深度偏移技术既可在炮点—接收点域实现，也可在共中心点—炮检距域实现。
Pre-stack depth migration technique can be realized either in shotpoint receiver domain or in CMP offs et domain.
叠前深度偏移技术既可在炮点—接收点域实现，也可在共中心点—炮检距域实现。
Pre-stack depth migration technique can be realized either in shotpoint receiver domain or in CMP offs et domain.
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