# Project PS1 — Army Long Range Persistent Surveillance (ALPS)

**Program element:** 0604820A — Radar Development  
**Project:** PS1  
**Component:** U.S. Army  
**Appropriation:** 2040 — RDT&E, Army  
**Budget Activity:** 5 — System Development & Demonstration  
**Vintage:** President's Budget PB2027  
**Canonical URL:** https://hitchintel.com/programs/0604820A/PS1  
**Parent:** https://hitchintel.com/programs/0604820A

## Summary

Project PS1 — Army Long Range Persistent Surveillance (ALPS) requests $25.0M in FY2027, 43% of the $58.3M requested for program element 0604820A, down 27% on FY2026. 1 R-2A activity decomposes the request.

## Funding profile

| Fiscal Year | Estimate Type | Amount ($M) |
|---|---|---|
| FY2025 | Actual | 13.8 |
| FY2026 | Enacted | 34.4 |
| FY2027 | Request | 25.0 |
| FY2028 | Outyear | 37.2 |
| FY2029 | Outyear | 32.0 |
| FY2030 | Outyear | 32.1 |
| FY2031 | Outyear | 32.4 |

> Estimate types are not summed. This project is one leaf of PE 0604820A; the PE total is the sum of its projects, never added to them.

## What project PS1 buys

The FY 2027 request for ALPS includes $25.042 million of funding. These funds will support the Army Long-Range Persistent Surveillance (ALPS) sensor, which is a persistent, passive air surveillance sensor system. ALPS capabilities include long-range, 360-degree surveillance against conventional fixed wing and rotary wing aircraft, UAS, and cruise missiles. ALPS supports tactical to strategic operations via its capability to connect with multiple Army and Joint Command and Control systems including the Integrated Fire Control Network (IFCN). In FY 2025, Project PS1 /Army Long Range Persistent Surveillance (ALPS) was a new effort realigned within PE 0604820A / Radar Development. Funding realigned from PE 0604741A / Air Defense Command Control and Intelligence - Eng Dev, Project 126 /PEO Electronic Protect for the design, development, integration, and test of ALPS. The ALPS program was started as an urgent capability in response to multiple Combatant Commands identified operational needs. The ALPS program tasks include all programmatic and engineering activities needed to modernize systems currently supporting multiple Combatant Commands and design/development effort to provide a passive mobile capability to Army Air and Missile Defense forces.

**R-3 lines of work:** Management Services; Product Development; Test and Evaluation.

## Activities (R-2A) — 1

| Activity | FY2025 | FY2026 | FY2027 | Move | Page |
|---|---|---|---|---|---|
| Program Development and Support | 13.8 | 34.4 | 25.0 | −27% | [a0](https://hitchintel.com/programs/0604820A/PS1/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.

### Program Development and Support

FY 2027 funds will support: - Continue building of prototype assets to be used for qualification and developmental testing - Validate Safety and Human System Integration designs - Begin Developmental testing - Participate in Transformation in Contact (TIC) activities

Full year-by-year narrative: https://hitchintel.com/programs/0604820A/PS1/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/0604820A.

## Source & machine access

- **Source:** FY2027 Department of the Army RDT&E Budget Justification, Exhibits R-2/R-2A/R-3, PE 0604820A project PS1 (PB PB2027).
- **MCP:** `mcp.hitchintel.com` — `budget_get_program_element(pe="0604820A")`.

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