Then the trace gather undergoes velocity analysis, normal moveout correction and stack to bring seismic migrated section ( This is called scattering point imaging).

然后对该道集进行速度分析、动校正和叠加，得到偏移地震剖面，即共散射点成像。

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For enhancing the migrated imaging, these techniques, like DMO, migration velocity field smoothing and pre-stack depth migration, are used.

采用DMO、偏移速度场平滑、叠前深度偏移等技术提高偏移成像精度。

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