OVERVIEW: The AN/TPY-4 aka TPY-X is a transportable, long-range, 3-D, AESA, air and space surveillance, tactical radar operating in the D band (NATO).

DETAILS: The  AN/TPY-4  is designed to  provide  tactical control and/or surveillance of  air operations from any location. Intended to replace the AN/TPS-75 radar, it can track satellites, detecting low-profile unmanned aerial systems (UAS), and conducting ballistic missile search and tracking.   It can be deployed either as a stand-alone or as remotely controlled  radar.  It can also be deployed as part of a radar network to provide an integrated air picture. 

 The AN/TPY-4 uses digital beamforming and may rotate for 360 degrees or provides a stop/stare non-rotating mode with 90-degree coverage and a maximum detection range of 1,000 kilometers. The antenna consists of 1,152 independent radiating elements,  allowing  the system to multi-task, with different elements scanning for different threats.  This allows it to simultaneously scan and detect for manned aircraft, drones and missiles in high clutter and jamming environments.

Specifications:

Frequency: 		 1.215-1.400 GHz (D Band (NATO), L Band (IEEE))
Power output: 		 ??
PRF:			??
Pulsewidth: 		??	
Range Accuracy:		 ??
Range: 	 		300 nm (surveillance); 540 nm (stop/stare)                        							
On/Off time:		??

 Assembly/disassembly time:	??

			
NOTES: IOC  2025 (est).  The  AN/TPY-4 5 is deployed as two modules which can be carried to a forward position by two trucks or helicopters or a single C-130.  

SOURCES: "TPR-4 Multi-Mission Radar." Lockheed Martin. Accessed March 13, 2024. https://www.lockheedmartin.com/content/dam/lockheed-martin/rms/documents/ground-based-air-surveillance-radars/2024_BRO_59181-02_TPY-X_TPY-4_brochure_LETTER%20SIZE_v1.pdf. ; "AN/TPY-4 - Radartutorial." Grundlagen Der Radartechnik. Accessed March 13, 2024. https://www.radartutorial.eu/19.kartei/02.surv2/karte003.en.html. : Roza, David. "The Air Force is Moving Forward with a Replacement for Its Decades-old Long-range Radar." Task & Purpose. Last modified January 26, 2023. https://taskandpurpose.com/news/air-force-tpy-4-lockheed-radar/.
