Lockheed Martin has been awarded a $281 million contract by the United States Army to develop the Sentinel A4 radar system. Sentinel A4 is a high-performance modification of the Sentinel A3 (AN/MPQ-64A3) air and missile defense radar that will provide updates to improve the existing Sentinel capability against cruise missiles, unmanned aerial systems, rotary-wing, and fixed-wing threats.
The new Sentinel A4 radar will provide improved surveillance, detection, and classification capabilities against current and emerging aerial threats in order to protect Army maneuver formations and high-value static assets like command and control nodes, tactical assembly areas and geopolitical centers. Lockheed has developed numerous tactical Gallium Nitride (GaN) based radars beginning with the delivery of the TPS-77 Multi-Role Radar to Latvia in 2018 and they are under contract with the Army to insert GaN into the Q-53 Radar. The AN/TPQ-53 Quick Reaction Capability Radar is a mobile Active electronically scanned array counter-battery radar system.
