Reverse time migration reflection angle gather generation method, electronic equipment and storage medium

The invention relates to a reverse time migration reflection angle gather generation method, electronic equipment and a storage medium, and belongs to the technical field of seismic migration imaging. The method comprises the following steps: extrapolating reverse time wave fields of shot points and detection points, and constructing an energy target functional under gradient constraint on each time slice; iteratively solving wave field vector directions of a shot point end and a detection point end at the current moment; constructing an adaptive threshold through global amplitude scanning, screening and generating an effective point table at the current moment, and calculating a reflection field angle and/or an azimuth angle of an effective point in the table; interpolation calculation of reflection field angles or azimuth angles of invalid points is carried out in a set range of each valid point in the table; and applying azimuth angle domain cross-correlation imaging conditions to determine a gather at an