In Kirchhoffmigration, this is done by using the Kirchhoff integral representation of a field at a given point as a (weighted) superposition of waves propagating from adjacent points and times.
Reverse time migration (RTM) is more applicable for the imaging of complex structures than one-way wave-equation migration and Kirchhoff integral migration.
逆时偏移比单程波波动方程偏移和克希霍夫积分偏移更适于复杂构造成像。
3
Degradation in the quality of migration images can arise because of alias during Kirchhoff 3-d migration.