G/ATOR

The Ground/Air Task-Oriented Radar (G/ATOR) is an X-band, three-dimensional, short-to-medium-range tactical radar developed by Northrop Grumman for the U.S. Marine Corps. This highly mobile, multi-role system is designed to detect, identify, and track low-level cruise missiles, manned aircraft, unmanned aerial vehicles, rockets, and mortar and artillery fire. It consolidates the functions of five legacy ground-based radars, providing air surveillance, cueing for air defense weapons, counter-fire target acquisition, and air traffic control data, thereby reducing logistics, operating, and training costs. The G/ATOR system utilizes Active Electronically Scanned Array (AESA) technology with a 12-foot tall, 7-foot wide planar antenna array composed of 2,600 air-cooled solid-state transmit-receive modules, enabling electronic beam steering and simultaneous multi-mode operation. The entire system is transported by an Oshkosh Medium Tactical Vehicle Replacement (MTVR) truck towing the antenna trailer, and a Humvee carrying the Communications-Electronic Group (CEG), with major components also transportable by heavy-lift helicopters and MV-22 Osprey tilt-rotor aircraft. The G/ATOR program is being fielded incrementally: Increment I (air surveillance and short-range air defense) achieved initial operational capability (IOC) and full-rate production in 2016, Increment II (counter-fire target acquisition) achieved IOC in 2017, and Increment IV (military air traffic control) achieved IOC in 2018. Increment III, which previously focused on tactical enhancements, has been deferred. The Marine Corps plans to acquire a total of 69 G/ATOR systems, comprising 17 Increment I, 38 Increment II, and 14 Increment IV radars, to replace multiple existing systems and serve as a gap-filler for the TPS-59(V)3 long-range air surveillance radar.

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