The AN/TPY-4, formerly known as the TPY-X, is a ground-based,

active electronically scanned array An active electronically scanned array (AESA) is a type of phased array antenna, which is a computer-controlled antenna array in which the beam of radio waves can be electronically steered to point in different directions without moving the a ...

L-band The L band is the Institute of Electrical and Electronics Engineers (IEEE) designation for the range of Frequency, frequencies in the radio spectrum from 1 to 2 gigahertz (GHz). This is at the top end of the ultra high frequency (UHF) band, at t ...

, multi-function long-range

3D radar 3D radar provides for radar ranging and direction in three dimensions. In addition to range, the more common two-dimensional radar provides only azimuth for direction, whereas the 3D radar also provides elevation. Applications include weather rada ...

for air defense surveillance, built by

Lockheed Martin The Lockheed Martin Corporation is an American Arms industry, defense and aerospace manufacturer with worldwide interests. It was formed by the merger of Lockheed Corporation with Martin Marietta on March 15, 1995. It is headquartered in North ...

. It is a radar capable of multi-mission operation, and perform simultaneously the following work: * air surveillance * low profile UAS detection * ballistic missile search and track * maritime surveillance * satellite track In accordance with the

Joint Electronics Type Designation System The Joint Electronics Type Designation System (JETDS), which was previously known as the Joint Army-Navy Nomenclature System (AN System. JAN) and the Joint Communications-Electronics Nomenclature System, is a method developed by the U.S. War Depa ...

(JETDS), the "''AN/TPY-4''" designation represents the 4th design of an Army-Navy

electronic device Electronics is a scientific and engineering discipline that studies and applies the principles of physics to design, create, and operate devices that manipulate electrons and other electrically charged particles. It is a subfield of physics and ...

for ground transportable

surveillance Surveillance is the monitoring of behavior, many activities, or information for the purpose of information gathering, influencing, managing, or directing. This can include observation from a distance by means of electronic equipment, such as ...

radar system. The JETDS system also now is used to name all

Department of Defense The United States Department of Defense (DoD, USDOD, or DOD) is an executive department of the U.S. federal government charged with coordinating and supervising the six U.S. armed services: the Army, Navy, Marines, Air Force, Space Force, ...

electronic systems. The system is composed of: * the Transceive Group (TG), the radar system, * the Processor Group (PG), that has the generator for the radar system and that processes the data of the radar, * the Ancillary Group (AG), the transport mean.

Operators

Current operators

; (11) : In November 2022, the

Norwegian Air Force The Royal Norwegian Air Force (RNoAF) () is the air force of Norway. It was established as a separate arm of the Norwegian Armed Forces on 10 November 1944. The RNoAF's peacetime establishment is approximately 2,430 employees (officers, enlisted ...

ordered 8 TPY-4 radars for air surveillance missions, with an option for 3 additional radars. The 8 radars are being delivered until 2025. In September 2024, the option for the 3 additional radars was exercised. : The Platform Electronic System is built by

Kongsberg Defence & Aerospace Kongsberg Defence & Aerospace (KDA) is one of three business units of Kongsberg Gruppen (KONGSBERG) of Norway and a supplier of defence and space related systems and products, mainly anti-ship missiles, military communications, and command and we ...

(KDA). ; (19) : The United States Air Force selected this radar for the 3DELRR programme (3-dimensional expeditionary long range radar) in February 2022. The plan is to replace the TPS-75 with 35 AN/TPY-4(V)1 by 2028. :* 2 ordered in April 2022 for USD $75.0 million. :* 4 ordered in February 2023 for USD $84.9 million. :* 3 ordered in January 2024 for USD $65.1 million, to be delivered by end of January 2026. :* 10 ordered in April 2025

Future operators

; : Ordered in June 2025.

Potential operators

; : Lockheed Martin is offering an undisclosed number of the TPY-4 ground-based long-range surveillance radar to the RSAF (Republic of Singapore Air Force) to replace its FPS-117 radar.

References

{{reflist Radars of the United States Air Force Lockheed Martin AN/TPY-4 Military electronics of the United States

Operators

Current operators

Future operators

Potential operators

See also

References