TPY-4 Multi-Mission Radar[1]
3D long range detection, AESA radar with GaN TRM (transmit and receive modules)
CountryUnited States
Frequency1.215 to 1.4 GHz (L band)
Rpmup to 6, or stop/stare mode
Range555 km (300 nmi) in rotation,
1,000 km (540 nmi) in stop/stare mode
Altitude0 to 30500 m ft
Azimuth360° in rotation, +/− 45° in stop/stare mode
Elevation−6° to 38° (search elevation),
−6° to 90° (track elevation)
ManufacturerLockheed Martin
DesignerLockheed Martin

The AN/TPY-4 is a ground-based, active electronically scanned array, L-band, multi-function long-range 3D radar for air defense surveillance, built by Lockheed Martin.[2]

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

In accordance with the Joint Electronics Type Designation System (JETDS), the "AN/TPY-4" designation represents the 4th design of an Army-Navy electronic device for ground transportable surveillance radar system. The JETDS system also now is used to name all Department of Defense and some NATO electronic systems.

The system comprises:

  • Transceive Group (TG), the radar system,
  • Processor Group (PG), that has the generator for the radar system and that processes the data of the radar,
  • Ancillary Group (AG), the means of transport.

Operators

Current operators

Norway (11)
In November 2022, the Norwegian Air Force ordered 8 TPY-4 radars for air surveillance missions, with an option for 3 additional radars. The 8 radars are being delivered until 2025.[3] In September 2024, the option for the 3 additional radars was exercised.[4]
The Platform Electronic System is built by Kongsberg Defence & Aerospace (KDA).
United States (19)
The United States Air Force selected this radar for the 3DELRR programme (3-dimensional expeditionary long range radar) in February 2022.[5] The plan is to replace the TPS-75 with 35 AN/TPY-4(V)1 by 2028.[6]
  • 2 ordered in April 2022 for USD $75.0 million.[7]
  • 4 ordered in February 2023 for USD $84.9 million.[7]
  • 3 ordered in January 2024 for USD $65.1 million, to be delivered by end of January 2026.[6]
  • 10 ordered in April 2025[8]

Future operators

Denmark (3)
Ordered in December 2025.[9][10] At a cost of $610 million, with an option for one additional.[11]
Sweden
Ordered in June 2025.[12][13][14]

Potential operators

Singapore
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.[15]

See also

References

  1. ^ "TPY-4 Multi-Mission Radar". Lockheed-Martin. Retrieved 13 September 2024.
  2. ^ "When Minutes Matter: How the TPY-4 Radar Delivers Game Changing Flexibility to Face Threats Today – and Tomorrow". Lockheed Martin. 13 July 2022. Retrieved 2022-11-23.
  3. ^ Sharma, Soumya (2022-11-18). "Lockheed Martin to supply eight TPY-4 radar systems to Norway". Airforce Technology. Retrieved 2024-09-13.
  4. ^ "Norway orders additional TPY-4 multi-mission radars from Lockheed Martin". 2024-09-11. Retrieved 2024-09-13.
  5. ^ "Norway orders additional TPY-4 multi-mission radars from Lockheed Martin". 2024-09-11. Retrieved 2024-09-13.
  6. ^ Thomas, Richard (2024-01-22). "Lockheed Martin nets USAF contract for three more 3DELRR radars". Airforce Technology. Retrieved 2024-09-13.
  7. ^ Keller, John (2023-02-08). "Lockheed Martin to build four AN-TPY-4 3DELRR air-defense radar systems to help protect U.S. invasion forces". Military Aerospace. Retrieved 2024-09-13.
  8. ^ Wolfe, Frank (2025-04-22). "Lockheed Martin Has Received Contracts for 19 TPY-4 Radars for USAF So Far". Defense Daily. Retrieved 2025-04-23.
  9. ^ "Lockheed Martin skal levere luftvarslingsradarer i Danmark og på Færøerne" (in Danish). Forsvarsministeriet. Retrieved 2025-12-15.
  10. ^ "Denmark selects Lockheed Martin's TPY-4 radar for enhanced air defense | Paul Lemmo posted on the topic | LinkedIn". www.linkedin.com. Retrieved 2025-12-15.
  11. ^ https://www.defensenews.com/global/europe/2026/01/23/denmark-fast-tracked-lockheed-radars-for-northern-air-surveillance/
  12. ^ "FMV tecknar avtal om långräckviddig radar" (in Swedish). www.fmv.se. Retrieved 2025-06-04.
  13. ^ "Sweden Selects the Lockheed Martin TPY-4 Radar to Enhance Regional Deterrence and Defense Capabilities". Media - Lockheed Martin. Retrieved 2025-06-04.
  14. ^ "Sweden selects Lockheed Martin TPY-4 long-range radar to strengthen national defence". 2025-06-04. Retrieved 2025-06-04.
  15. ^ "Lockheed Martin positions TPY-4 radar for Singapore's long-range surveillance requirements". Default. 2024-02-14. Retrieved 2025-05-03.