Performance evaluation of the adaptive MTI canceller for extended clutter, ACEC

The ACEC is an open-loop adaptive MTI for the cancellation of a moveable, extended-in-range clutter, such as rain or chaff. Its simple structure is well suited for a digital implementation; its performance, much superior to other systems that use the phase information only, has been evaluated for different clutter spectra and clutter-to-noise ratios. The problems due to a fixed MTI upstream and/or to a pulse compressor downstream are analyzed and the pertaining solutions are presented, both from the theoretical and the experimental point of view.