AN/MPQ-64A4 Sentinel A4

Description: The US Army AN/MPQ-64A4 is an upgraded variant of the Sentinel A3 radar system with highly improved performance against cruise missiles, unmanned aerial vehicles (UAVs), rotary-wing and fixed-wing aircraft. The Sentinel A4 air and missile defense radar will provide improved surveillance, detection and classification capabilities. The new radar system is slated to protect the US Army formations and high value static assets such as command and control nodes, tactical assembly areas and geo-political centers. The new US Army radar leverages the TPS-77 and Q-53 Gallium Nitride (GaN) technology. Lockheed Martin was awarded a $281 million contract for the development and production of 18 Sentinel A4 radar systems by 2026.