# Project EY9 — Range Radar Replacement Program (RRRP)

**Program element:** 0604759A — Major T&E Investment  
**Project:** EY9  
**Component:** U.S. Army  
**Appropriation:** 2040 — RDT&E, Army  
**Budget Activity:** 6 — RDT&E Management Support  
**Vintage:** President's Budget PB2027  
**Canonical URL:** https://hitchintel.com/programs/0604759A/EY9  
**Parent:** https://hitchintel.com/programs/0604759A

## Summary

Project EY9 — Range Radar Replacement Program (RRRP) requests $48.9M in FY2027, 46% of the $106.1M requested for program element 0604759A, up 1.8% on FY2026. 1 R-2A activity decomposes the request.

## Funding profile

| Fiscal Year | Estimate Type | Amount ($M) |
|---|---|---|
| FY2025 | Actual | 37.1 |
| FY2026 | Enacted | 48.0 |
| FY2027 | Request | 48.9 |
| FY2028 | Outyear | 49.4 |
| FY2029 | Outyear | 49.8 |
| FY2030 | Outyear | 50.3 |
| FY2031 | Outyear | 50.8 |

> Estimate types are not summed. This project is one leaf of PE 0604759A; the PE total is the sum of its projects, never added to them.

## What project EY9 buys

In order to effect strategic overmatch on current and future battlefields, it is essential that the United States (U.S.) Army provide advanced radar system instrumentation for developmental testing. Since existing range radar instrumentation is aged beyond useful life and cannot adequately support emerging test requirements, the Range Radar Replacement Program (RRRP) recapitalizes and develops modern instrumentation radars to replace obsolete tracking and surveillance radars at U.S. Army Test and Evaluation Command's (ATEC) activities, which include: Aberdeen Test Center (ATC), MD; White Sands Test Center (WSTC), NM; and Yuma Test Center (YTC), AZ. RRRP will deliver capability in three (3) block increments: Block I will recapitalize or replace existing radar systems, Block II will develop a Long Range Radar (LRR) which is compliant with ATEC's Test Capability Requirements Document (TCRD), and Block III will develop LRRs and Medium Range Radars (MRRs) to meet ATEC Block III TCRD Addendum. The acquisition of modern instrumentation radar systems will provide the Army with critical testing data essential for the development of next generation technology and advanced system capabilities. The RRRP provides the test centers with improved radar resolution, sensitivity, accuracy, clutter suppression, and reliability. The planned solution to meet program requirements consists of four primary items: Long Range Single Object Tracking Radars (SOTR), Long Range Multiple Object Tracking Radars (MOTR), Medium Range Radars (MRR), and Short-Range Radars (SRR). The resulting systems will not only reduce operation and sustainment costs for the ranges, but will improve data collection, thus enhancing development of Army systems being tested at these ranges. The current fleet of instrumentation radars located at ATC, WSTC, and YTC has become antiquated to the extent that they are not able to support the test needs of the test centers. FY27 funds in the amount of $48.853 Million provides funding for acceptance testing of Block I instrumentation radars, continued development and acceptance testing of the Block II Long Range Instrumentation Radar prototype, and allows for continued development of Block III prototype radars.

## Activities (R-2A) — 1

| Activity | FY2025 | FY2026 | FY2027 | Move | Page |
|---|---|---|---|---|---|
| EMD Phase | 37.1 | 48.0 | 48.9 | +2% | [a0](https://hitchintel.com/programs/0604759A/EY9/a0) |

> Activities carry the prior, current and budget year only — no five-year plan. In the request year they partition this project exactly; in earlier years they can under-cover it.

### EMD Phase

Testing of Block I instrumentation radars, continued development and acceptance testing of the Block II Long Range Instrumentation Radar prototype and allows for continued development of Block III prototype radars.

Full year-by-year narrative: https://hitchintel.com/programs/0604759A/EY9/a0

## What is NOT on this page

Congressional marks, the R-2 mission description and acquisition strategy, the industry vs government split of the whole request, and related program elements are recorded at **program-element** grain — an NDAA mark lands on a PE, never on a project. They are at https://hitchintel.com/programs/0604759A.

## Source & machine access

- **Source:** FY2027 Department of the Army RDT&E Budget Justification, Exhibits R-2/R-2A/R-3, PE 0604759A project EY9 (PB PB2027).
- **MCP:** `mcp.hitchintel.com` — `budget_get_program_element(pe="0604759A")`.

*HitchAI is an independent intelligence service, not affiliated with the U.S. Department of Defense. Budget figures are requests/estimates, not obligations.*