AN/TPY-4

TPY-4 Multi-Mission Radar[1]
Country of origin United States
ManufacturerLockheed Martin
DesignerLockheed Martin
Type3D long range detection, AESA radar with GaN TRM (transmit and receive modules)
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 30,500 m (0 to 100,066 ft)
Azimuth360° in rotation, +/− 45° in stop/stare mode
Elevation−6° to 38° (search elevation),
−6° to 90° (track elevation)

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" (PDF). 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 23 November 2022.
  3. ^ Sharma, Soumya (18 November 2022). "Lockheed Martin to supply eight TPY-4 radar systems to Norway". Airforce Technology. Retrieved 13 September 2024.
  4. ^ "Norway orders additional TPY-4 multi-mission radars from Lockheed Martin". 11 September 2024. Retrieved 13 September 2024.
  5. ^ "Norway orders additional TPY-4 multi-mission radars from Lockheed Martin". 11 September 2024. Retrieved 13 September 2024.
  6. ^ a b Thomas, Richard (22 January 2024). "Lockheed Martin nets USAF contract for three more 3DELRR radars". Airforce Technology. Retrieved 13 September 2024.
  7. ^ a b Keller, John (8 February 2023). "Lockheed Martin to build four AN-TPY-4 3DELRR air-defense radar systems to help protect U.S. invasion forces". Military Aerospace. Retrieved 13 September 2024.
  8. ^ Wolfe, Frank (22 April 2025). "Lockheed Martin Has Received Contracts for 19 TPY-4 Radars for USAF So Far". Defense Daily. Retrieved 23 April 2025.
  9. ^ "Lockheed Martin skal levere luftvarslingsradarer i Danmark og på Færøerne". Forsvarsministeriet (in Danish). Retrieved 15 December 2025.
  10. ^ "Denmark selects Lockheed Martin's TPY-4 radar for enhanced air defense | Paul Lemmo posted on the topic | LinkedIn". www.linkedin.com. Retrieved 15 December 2025.
  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". www.fmv.se (in Swedish). Retrieved 4 June 2025.
  13. ^ "Sweden Selects the Lockheed Martin TPY-4 Radar to Enhance Regional Deterrence and Defense Capabilities". Media - Lockheed Martin. Retrieved 4 June 2025.
  14. ^ "Sweden selects Lockheed Martin TPY-4 long-range radar to strengthen national defence". 4 June 2025. Retrieved 4 June 2025.
  15. ^ "Lockheed Martin positions TPY-4 radar for Singapore's long-range surveillance requirements". Default. 14 February 2024. Retrieved 3 May 2025.
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