After completing production of the first unit in 2022 and successfully passing the initial testing phase, Lockheed Martin has delivered the first AN/TPY-4(V)1 radar to the United States Air Force (USAF). This delivery marks the formal start of government-led testing, a key milestone in the Three-Dimensional Expeditionary Long-Range Radar (3DELRR) program.
The AN/TPY-4 was selected to replace the aging AN/TPS-75 radars, which have been in service for decades. The program calls for the acquisition of up to 35 units, with the goal of completing the operational transition by 2028. The 3DELRR program aims to provide the USAF with a long-range, ground-based radar system with three-dimensional detection and tracking capabilities against advanced airborne threats, including ballistic missiles, manned aircraft, and unmanned aerial systems.
In terms of operational features, the radar is equipped with Active Electronically Scanned Array (AESA) technology and gallium nitride (GaN) modules, providing increased efficiency, reliability, and ease of maintenance. Its software-defined architecture allows for constant updates and adaptability without the need for hardware modifications, ensuring long-term operational relevance.
The success of the TPY-4 radar extends beyond the U.S., as Lockheed Martin has reported that Norway plans to acquire a total of 11 units of the system to strengthen its national air surveillance network, with deliveries scheduled through 2025. Additionally, Kongsberg Defence & Aerospace has contributed to the development of the radar’s platform electronics subsystem, further reinforcing transatlantic industrial cooperation and NATO ally interoperability.
Regarding the delivery of the first system, Rick Cordaro, Vice President of Radar and Sensor Systems at Lockheed Martin, stated: “The successful completion of initial testing and delivery of the first TPY-4 radar system underscores our commitment to providing the U.S. Air Force with cutting-edge, high-performance systems that meet their evolving requirements and expectations.” He also added, “The 3DELRR program is critical to global air surveillance and defense capabilities, as well as to the defense of the nation.”
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