sentences:  The MP-RTIP is a "modular, active electronically scanned array radar system" designed to be scaled in size in order to fit on board different platforms.The system is being developed from earlier Northrop-Grumman radar systems, including the Joint Surveillance Target Attack Radar System (JointSTARS) and the existing Global Hawk system.The next-generation system will improve the Air Force's ability to track slow-moving ground vehicles and low-flying cruise missiles.