# Architecture Development

**R-2A activity** of project 673030 — Global Positioning System Generation 4  
**Program element:** 1203165SF — Global Positioning System Generation 4  
**Component:** U.S. Space Force · **Budget Activity:** 7  
**Vintage:** President's Budget PB2027  
**Canonical URL:** https://hitchintel.com/programs/1203165SF/673030/a0  
**Parent:** https://hitchintel.com/programs/1203165SF

> **NEW START.** $115.0M requested in FY2027 with no prior-year and no current-year funding.

## Summary

This activity requests $115.0M in FY2027, 100% of project 673030 — a new start with no prior-year and no current-year money. The R-2A exhibit describes it across FY2027, including what the FY2027 money is planned to buy.

## What the FY2027 request buys

**FY2027 planned work.** Initiate technology maturation and risk reduction efforts for new PNT Control segment in order to meet the modern threat environment and capitalize on advances in commercial technology; develop technical baseline to utilize open interfaces and MOSA to enable enduring, multi-vendor competition and plug-and-play development; achieve contract ATP; manage cost, schedule, and performance of numerous vendors for control segment development. Initiate efforts to mature technology for increased resiliency and availability across future GPS Segments (Ground, Space, and User Equipment). Rapidly respond to implement system resiliency and situational awareness necessary to operate in the contested space domain. Activities may include, but are not limited to program office support, studies, technical analysis, experimentation, risk reduction, prototyping, and activities that may leverage commercial, U.S. Government partnership, and international opportunities to respond to existing and emerging adversarial threats with speed and agility.

**FY2026 to FY2027 change.** FY27 funding increased due to FY27 being first year of funding.

## Funding

| Fiscal Year | Estimate Type | Amount ($M) |
|---|---|---|
| FY2025 | Actual | 0.0 |
| FY2026 | Enacted | 0.0 |
| FY2027 | Request | 115.0 |

> Prior, current and budget year only — an R-2A activity carries no five-year plan. It sums exactly into its project in the request year and not necessarily in any other.

## Source & machine access

- **Source:** FY2027 Department of the Air Force RDT&E Budget Justification, Exhibit R-2A, PE 1203165SF project 673030 (PB PB2027). Narrative is the government's own text.
- **No marks, no contractors at this grain** — congressional marks land on the program element and R-3 performers on the project.
- **MCP:** `mcp.hitchintel.com` — `budget_get_activity`.

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