ABSTRACT Seismic images provided by reverse time migration can be contaminated by artefacts associated with the migration of multiples. Multiples can corrupt seismic images, producing both false positives, that is by focusing energy at unphysical interfaces, and false negatives, that is by destructively interfering with primaries. Multiple prediction/primary synthesis methods are usually designed to operate on point source gathers and can therefore be computationally demanding when large problems are considered. A computationally attractive scheme that operates on plane‐wave datasets is derived by adapting a data‐driven point source gathers method, based on convolutions and cross‐correlations of the reflection response with itself, to include plane‐wave concepts. As a result, the presented algorithm allows fully data‐driven synthesis of primary reflections associated with plane‐wave source responses. Once primary plane‐wave responses are estimated, they are used for multiple‐free imaging via plane‐wave reverse time migration. Numerical tests of increasing complexity demonstrate the potential of the proposed algorithm to produce multiple‐free images from only a small number of plane‐wave datasets.

中文翻译：

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初级平面波响应的数据驱动检索

摘要 由逆时偏移提供的地震图像可能会受到与多次波偏移相关的人工制品的污染。多次波会破坏地震图像，产生假阳性，即通过将能量集中在非物理界面上，以及产生假阴性，即通过破坏性干扰初级。多重预测/初级合成方法通常设计用于对点源道集进行操作，因此在考虑大问题时可能需要计算。通过采用基于反射响应与自身的卷积和互相关的数据驱动点源道集方法，以包括平面波概念，推导出一种对平面波数据集进行操作的具有计算吸引力的方案。因此，所提出的算法允许对与平面波源响应相关的初级反射进行完全数据驱动的合成。一旦估计了初级平面波响应，它们将用于通过平面波逆时偏移进行多次自由成像。越来越复杂的数值测试证明了所提出的算法具有仅从少量平面波数据集生成多幅图像的潜力。