The common-depth-point technique merely means the manifold repetition of each reflection observation with different source-detector geometry.

其深度点技术仅意味着用不同的震源——检波器的分布形式多次重复每个反射观测。

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Common focus point (CFP) migration based on the equal travel-time principle is a kind of pre-stack depth migration method through focusing in both emission and detection.

共聚焦点(CFP)偏移是基于等时原理，通过激发聚焦和检波聚焦的双聚焦实现叠前深度偏移的地震成像方法。

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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.

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。

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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.

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。

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