Automatic Gain Control is one of the processing methods available for Prestack gathers. It will adjust the amplitude level using a sliding window of user-defined size (window width). Optionally, part of the lowest energy may be discarded from the amplitude level computation (in percent of the amplitude distribution).
Vertical stack may be used to laterally stack the traces in order to increase the signal-to-noise ratio of Pre-stack gathers. The stack is controlled by an inline/crossline stepout, and the Shape (Cross or Rectangle).
