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.
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.
面炮组合和控制照明结合的叠前深度偏移通过对震源波场的控制以及高效的面炮偏移能够得到高质量的成像结果。
Prestack depth migration of areal shot records and controlled illumination can get high-quality images by source wavefield controlling and highly efficient areal shot records migration.
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