
Sentinel A4 radar's advanced sensor technologies provide fire control capabilities against low- and mid-altitude threats. This radar can track aircraft, helicopters, unmanned air vehicles, cruise missiles, artillery, and other threats. The radar provides 360-degree surveillance and works in tandem with the Indirect Fires Protection Capability (IFPC) system. It can communicate with the fire direction centre to improve the quality and accuracy of the data it provides warfighters. It is part in the future integrated anti-missile defense system.
The A4 radar is to be integrated with the Integrated Air and Missile Defense Battle Command System for enhanced surveillance and detection. It can also protect command and control nodes as well as tactical assembly areas. It will support multi-domain operations and provide better classification capabilities. This radar will be able to protect valuable static assets. The system can also be used with an HMMWV that has an onboard power generator. It can also work autonomously. It will communicate with the fire direction center and distribute data through the SINCGARS radio network.

The Sentinel A4 programme is a critical enabler in the US Army’s modernization process. It will allow the US military to share data across platforms. It will allow US Army to track down and defeat threats at low and middle altitudes. It will enhance detection capabilities of rotary-wing aircraft, and provide fast information on the impact point.
The Sentinel A4 high performance version of the Sentinel A3 missile defense radar is called the Sentinel A4. Lockheed Martin manufactures it and is located in Syracuse. The first radar was produced by the company five months earlier than expected. This success can be attributed to the Army's strong partnership as well as its agile development process. The company expects to produce five more radars by March 2022.
The Sentinel A4 forms part of the Army’s Integrated Air and Missile Defense System. This system is designed to protect the United States against airborne threats. It will also provide protection for command and control nodes, tactical assembly zones, and high-value static assets. It can also protect Army maneuver formations and geopolitical centres. The radar can provide 360° surveillance, detecting aircraft and tracking them.
The Sentinel A4 can also be used in conjunction with the Integrated Air and Missile Defense Command and Control System. This command and control system provides the US military with real-time information on the status of the battlefield. The US Army will be able to use the Sentinel as part of its forward area air defence command and control system. It will also protect the US Army's command, control and tactical assembly nodes. The radar will also provide improved detection capabilities against rotary-wing aircraft and help to provide rapid information on the point of impact.

Sentinel A4 will have twice the accuracy and range as the A3 version. It will be more effective in detecting slow-moving UAVs and rotary-wing aircraft. It was created for power swap and weight.