



| Name / Designation | TPY-4 |
| Manufacturer | Lockheed Martin |
| Country of Origin | United States |
| Type / Role | Long Range Air Surveillance Radar |
| Operational Domain | Ground Based |
| Status | In Service |
| Frequency Band | S Band |
| Antenna Type | Active Electronically Scanned Array |
| Antenna Aperture / Size | Large fixed AESA panel |
| Power Output | Classified |
| Detection Range | Up to 450 km |
| Tracking Range | Over 250 km |
| Target Tracking Capacity | Hundreds simultaneously |
| Elevation Coverage | Wide elevation coverage |
| Azimuth Coverage | 360 degrees |
| Beam Steering | Electronic |
| Pulse Repetition Frequency (PRF) | Adaptive |
| Resolution | High |
| Update Rate | Rapid |
| Clutter Rejection / ECCM | Advanced ECCM |
| Primary Functions | Surveillance, tracking, cueing |
| Target Types | Aircraft, cruise missiles, UAVs |
| Integration / Networking | NATO IAMD systems |
| IFF Capability | Integrated |
| Data Link / Networking | Standard military data links |
| Weather & Terrain Resistance | High |
| Mobility / Mounting | Fixed or semi mobile |
| Dimensions | Large radar array |
| Weight | Several tons |
| Power Requirement | External generator |
| Cooling System | Liquid cooled |
| Operating Temperature Range | Military standard |
| Deployment Platform | Ground installation |
| Crew Requirement | Small crew |
| Signal Processor Type | Digital |
| Processing Speed | Real time |
| AI / Automation Features | Automated tracking |
| Data Output / Interface | Open architecture |
| Software Upgradeability | Yes |
| Year Introduced | Early 2020s |
| Users / Operators | Denmark, NATO partners |
| Notable Deployments | NATO regional air defense |
| Successor / Predecessor | Replaces legacy surveillance radars |
| Export Availability | Yes |
| ITAR / MTCR Status | ITAR controlled |
| Cost Estimate | Tens of millions USD |
The TPY-4 is Lockheed Martin’s next generation ground based air surveillance radar, developed to strengthen national and NATO integrated air and missile defense networks. Designed to replace aging Cold War era sensors, TPY-4 delivers persistent, long range detection against modern air threats, including aircraft, cruise missiles, and unmanned aerial systems. Its fully digital AESA architecture allows continuous 360 degree coverage while supporting high target density environments.
Selected by Denmark to reinforce NATO deterrence and regional air defense, TPY-4 reflects Lockheed Martin’s focus on scalable, networked sensors optimized for coalition operations and U.S. aligned command and control systems.
TPY-4 is manufactured by Lockheed Martin, a U.S. based defense and aerospace company. The radar is developed and produced in the United States, with European industrial participation for selected international programs. Lockheed Martin is responsible for system design, radar technology, software, and integration.
AN/TPY-4 provides detection ranges of up to 450 kilometers against large aerial targets. The radar supports high update rates and simultaneous tracking of hundreds of targets, including high speed and low altitude threats. Electronic beam steering enables rapid repositioning without mechanical movement, improving survivability and reaction time.
Lockheed Martin has not released official pricing. Based on comparable long range AESA surveillance radars, open source estimates place AN/TPY-4 unit cost in the tens of millions of U.S. dollars, depending on configuration and support packages.
It is used for long range air surveillance and air defense cueing.
Yes, it uses solid state AESA technology.
Yes, it is optimized for counter UAS missions.
Yes, it is designed for truck mounted deployment.
Variants and related RADA systems are used by U.S. forces.
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