There is a desire in the Air Force and other services to broaden the capability of existing radar systems by establishing Open System Architectures. In this manner, 3rd parties can deploy their software and the government reaps the benefit of “Best of Breed” algorithms. EMSI implemented third party maritime modes for the Dismount Detection Radar. The maritime mission requirements were satisfied with two modes: a Maritime MTI mode and a short-dwell ISAR mode. A block diagram is shown.