Three Dimensional Expeditionary Long Range Radar
Abstract
This budget line funds the Three-Dimensional Expeditionary Long-Range Radar (3DELRR) program. The 3DELRR program replaces the unsustainable AN/TPS-75 radar. The AN/TPS-75 radar was first fielded in the early 1970s, is at the end of its service life, and costly to maintain. The 3DELRR system will be the USAF's principal long-range, ground-based sensor for detecting, identifying, tracking, and reporting aerial tracks for the Joint Force Air Component Commander (JFACC). The 3DELRR system will provide multiple benefits and increased capabilities to the USAF and the Joint Services, including but not limited to: 1) ability to detect and track highly maneuverable, small radar cross-section airborne targets (modern and emerging threats); 2) enable greater battlefield and battlespace awareness through its precise, real-time air picture of sufficient quality to control individual aircraft under a wide range of environmental and operational conditions; and 3) mitigate reliability, operational availability, maintainability, transportability and sustainability issues. The 3DELRR system consists of the TPY-4 radar and is supported by Prime Movers, Generators, and other smaller PMO Purchased Equipment. Prime Movers and Generators are currently long lead-time items. FY2025 funding will support continued capability development for the 3DELRR system. Development of the system will consist of electronic protection (EP) techniques, classification and clutter algorithms, and enhanced radar capabilities across various operating environments. FY2025 funds will also support integration of the 3DELRR system with the United States Army using the Integrated Fire Control Network (IFCN) interface. FY2025 funds will be allocated for 3DELRR decoy development and integration to the USN & USMC Cooperative Engagement Capability/Composite Tracker Network (CEC/CTN) as available. Test and evaluation will also continue with FY2025 funding to support development of the TPY-4 radar to include cybersecurity and performance assessments, mobility, evaluations, and initial maintenance demonstrations. The total cost of the 3DELRR MTA effort is $360.5 million, including RDT&E and procurement of prototype units. The 3DELRR program is not fully funded across the Future Years Defense Program. The Department of the Air Force is assessing all options to address the funding shortfalls for MTA programs including additional funding in a future budget request, performance trades based on technical maturity, or transition to alternative pathways. This program element may include necessary civilian pay expenses required to manage, execute, and deliver weapon system capability. The use of such programs funds would be in addition to the civilian pay expenses budgeted in program element 0605827F, 0605828F, 0605829F, 0605831F, 0605832F, 0605833F, 0605898F, 0606398F. In FY23 $0.00M was expended for civilian pay expenses in this program element, and in FY24 $0.00M is forecasted for civilian pay expenses in this program element. This effort is in Budget Activity 4, Advanced Component Development and Prototypes (ACD&P), because efforts are necessary to evaluate integrated technologies, representative modes or prototype systems in a high fidelity and realistic operating environment.
Document Details
- Document Type
- Project
- Publication Date
- Oct 01, 2025
- Source ID
- 646002_0207455F_4_3600_PB_2025
Related Documents
- Root: Three Dimensional Long-Range Radar (3DELRR)
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