RDT&E Program Element · President's Budget PB2027

Global Positioning System III - Operational Control Segment

PE 1206423SF·U.S. Space Force·Approp. 3620F — RDT&E·BA7 — Operational System Development
FY2027 Request
$332.3M
⚑ Contested — House approps cuts 62%
HitchAI read

U.S. Space Force funding ramps 28% to a $332.3M request in FY2027 — the program's peak, before stepping down 98% across the five-year plan. In the FY2027 defense authorization, the House funded it in full; the Senate cut 29% (to $234.3M); House appropriators cut 62% (to $125.0M). RTX / Raytheon leads the industry work.

FY2027 Request
$332.3M
▲ 28% vs FY2026
House approps mark
$125.0M
▼ $207.3M vs request
FY2026 Enacted
$260.2M
In law

Roll-up of 2 projects. Projects are the summable leaves — the PE total is their sum, never added to it.

For fiscal year 2027, the U.S. Space Force is requesting $332.3M for Global Positioning System III - Operational Control Segment under RDT&E program element 1206423SF, up 28% over FY2026. In the FY2027 defense authorization, House approps moved to cut it to $125.0M.

Funding trajectory

Funding profile, FY2025–FY2031

Prior years are actuals, the budget year is the request, and the outyears are the FYDP plan. Estimate types are colored and never summed into one figure.

1002003000263.4FY25ACTUAL260.2FY26ENACTED332.3FY27REQUEST73.7FY2829.6FY2916.9FY307.0FY31HOUSE APPROPS
Actual Enacted Request Outyear (FYDP) House approps mark
Fiscal YearEstimate TypeAmount ($M)
FY2025Actual263.4
FY2026Enacted260.2
FY2027Request332.3
FY2028Outyear73.7
FY2029Outyear29.6
FY2030Outyear16.9
FY2031Outyear7.0
Where it sits

Acquisition lifecycle

This program is funded in RDT&E Budget Activity 7 — Operational System Development.

Complete
Research
BA 1–2
Complete
Advanced Technology
BA 3
Complete
Prototyping
BA 4
Current
Development & Fielding
BA 5–7
Inside the program element

2 projects roll up into PE 1206423SF

Projects are the summable leaves — the PE total is their sum, never added to it. Program elements and projects carry the full five-year plan; activities stop at the budget year. This PE moves 28% overall, which can hide much larger swings below.

Congressional action

The request is contested

Committee marks on the FY2027 request. Adds and cuts are reconciled in conference before they become law.

RequestPresident's Budget
$332.3M
House NDAA (HASC)HASC
$332.3M full · +$0
Senate NDAA (SASC)SASC
$234.3M −$98.0M · −29%
House Approps (HAC-D)HAC_D
$125.0M −$207.3M · −62%
▲ $207.3M chamber gap — unresolved as of 2026-07-27. These are FY2027 authorization marks (NDAA); appropriations and the conference agreement may differ.
Who's building it

Where the FY2027 request goes

Performers named in the R-3 exhibit, resolved into industry, government-lab, and unspecified shares. Budget-justification contract funding, not obligations.

RTX / Raytheon
$88.9M · 27%
OCX 3F Development · CPAF
Where FY2027 funding flowsShare$M
Industry primes28%92.7
Other / unspecified72%239.6
FY2027 request100%332.3
See RTX / Raytheon's full federal contract ledger members
Program detail

Mission & acquisition strategy

Mission Delta 31 is developing the Next Generation Operational Control System (OCX) and OCX 3F (Project 67A021, 67A023) for Guardians across Position, Navigation, and Timing. As a result, the Service will improve readiness and operational reach of existing force structure. Program Element (PE) 1206423SF funds Research, Development, Test and Evaluation (RDT&E) for the Next Generation Operational Control System (OCX), which includes OCX Blocks 0, 1, and 2, and the upgrade to OCX called OCX Block 3F (OCX 3F), which incorporates Regional Military Protection (RMP) and command and control functionality for GPS III Follow-on (GPS IIIF) satellites.

OCX Block 3F is a separate Acquisition Category (ACAT) II program tailored to enhance and integrate with the OCX baseline. It is part of the overall GPS Enterprise Modernization effort. The OCX 3F development contract was awarded sole source to Raytheon Intelligence and Space on 29 Apr 21. The OCX 3F program uses an agile software development approach to upgrade the OCX system to support the first GPS IIIF satellite launch, while also maintaining backwards compatibility for C2 of the existing GPS satellite constellation. The program formally entered the Over-Target Baseline / Over-Target Schedule (OTB/OTS) re-baselining process on 30 May 24.

Project 67A021, 67A023 — OCX
  • Product Development
  • Test and Evaluation
  • Management Services
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Ask this program element

Answers are generated from the figures on this page — the FY2027 justification exhibits and the marks tracked above — and nothing else is consulted. Confirm any figure against the cited exhibit before you use it externally.

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Questions this page can answer
How does the FY2027 request compare with FY2026, and what does the five-year plan show?What did House approps do to this request, and what is still unresolved?Which project inside PE 1206423SF is growing fastest, and which is shrinking?How is the FY2027 request split between industry and government performers?

This page carries the budget justification and the NDAA marks — nothing else. For what RTX / Raytheon has actually been obligated, the ledger is at hitchintel.com/vendors; for live solicitations, hitchintel.com/opportunities. Both are member surfaces.

Provenance

Cite this page

Sources
FY2027 Department of the Air Force RDT&E Budget Justification · Exhibits R-2 / R-3 · PE 1206423SF (President's Budget PB2027) — and FY2027 NDAA committee marks, as tracked 2026-07-27.
Suggested citation
HitchAI, "Global Positioning System III - Operational Control Segment (PE 1206423SF)," federal budget intelligence, PB2027 vintage. hitchintel.com/programs/1206423SF
Machine access
Markdown twin /programs/1206423SF.md · MCP mcp.hitchintel.combudget_get_program_element, budget_get_cong_marks
FY2027 Request
$222.2M
▲ 17% vs FY2026
FY2026 Enacted
$190.3M
▲ 3.4% vs FY2025
FY2025 Actual
$184.1M
Prior year

OCX — one RDT&E project inside PE 1206423SF. Congressional marks are recorded on the program element, not on a project.

Project 67A021 — OCX — requests $222.2M in FY2027, 67% of the $332.3M requested for program element 1206423SF. Year over year it grows 17% against FY2026.

Funding trajectory

Project 67A021 funding, FY2025–FY2031

Prior years are actuals, the budget year is the request, and the outyears are the FYDP plan. Estimate types are colored and never summed into one figure. Projects carry the full five-year plan; the activities inside them stop at the budget year.

501001502000184.1FY25ACTUAL190.3FY26ENACTED222.2FY27REQUEST0.0FY280.0FY290.0FY300.0FY31
Actual Enacted Request Outyear (FYDP)
Fiscal YearEstimate TypeAmount ($M)
FY2025Actual184.1
FY2026Enacted190.3
FY2027Request222.2
FY2028Outyear0.0
FY2029Outyear0.0
FY2030Outyear0.0
FY2031Outyear0.0
Inside the project

3 accomplishments / planned programs

The R-2A exhibit. Activities carry the prior, current and budget year only — no five-year plan — and they are descriptive: coverage is partial and they do not always add back to the project, so count them, never total them. Opening lines only here — the full year-by-year narrative is on the project page.

OCX Development▼ 100%
FY2025 actual$180.2M
FY2026 enacted$112.3M
FY2027 request

Block 0 continues support for the launch checkout and anomaly resolution of GPS III satellites. Continue to perform maintenance activities for Blocks 1 and 2, provide contractor staff to support government activities, and conduct pre-planned system updates to align ground capabilities with GPS enterprise changes involving the space and…

Technical Support▼ 100%
FY2025 actual$3.9M
FY2026 enacted$5.6M
FY2027 request

Continue data collection and tuning of the monitoring stations equipment as needed. Continue Systems Engineering and technical support and analysis for Government led testing, and operational demonstrations, exercises, and training. Assist with transition events and provide technical support.

FY2025 actual
FY2026 enacted$72.5M
FY2027 request$222.2M

Continue upgrades to modernize the AEP legacy ground control segment system to deliver OCX CDD requirements in place of OCX. Upgrades include GPS IIIF Launch, GPS IIIF C2, SAASM and NGA Receiver Integration. Additional upgrades to system interface tools are planned to support development and fielding of CNAV monitoring CDD requirements…

Read the FY2027 plan →
Project 67A021 — every activity in full →
Project detail

What project 67A021 buys

Mission Delta 31 is developing the Next Generation Operational Control System (OCX) (Project 67A021) for Guardians across Position, Navigation, and Timing. As a result, the Service will improve readiness and operational reach of existing force structure. OCX acquisition was established to: 1) provide command and control of legacy and GPS III satellites; 2) incorporate situational awareness to support Navigation Warfare (NAVWAR) and signal monitoring; 3) enable mission capability upgrades to support a warfighter effects-based approach to operations; and 4) integrate DoW information assurance and cybersecurity controls and capabilities. OCX funds will support efforts such as engineering studies and analyses, architectural engineering studies, trade studies, technology needs forecasting, technology development, systems engineering, system development, test and evaluation efforts, pre-operational support activities, and interim contractor support, in support of upgrades and product improvements for military and civil applications necessary to support efforts to protect the United States military and Allies' use of GPS. Additionally, funds will ensure efforts to meet Joint Requirements Oversight Council (JROC) approved required capabilities. OCX Block 0 is the Launch and Checkout System (LCS) intended to conduct Launch and Early Orbit (LEO) operations and the on-orbit checkout of all GPS III satellites. The 2nd Space Operations Squadron (2SOPS) can also call upon OCX Block 0 capabilities at any time to support GPS III anomaly resolution activities. OCX Block 0 is a subset of OCX Block 1. OCX Block 1 fields the operational capability to control all legacy satellites, the legacy civil signal (L1C/A), the legacy military signals (L1P(Y), L2P(Y)) as well as the GPS III satellites and the modernized civil signal (L2C) and the aviation safety-of-flight signal (L5). In addition, Block 1 will field the basic operational capability to control the modernized military signals (L1M and L2M M-Code), and the globally compatible signal (L1C). OCX Block 2 fields the advanced operational capability to control the advanced features of the modernized military signals (L1M and L2M M-Code). Architecture Evolution Plan (AEP), also known as Operational Control Segment (OCS), is the legacy operational control segment for GPS.

R-3 lines of work
  • Product Development
  • Test and Evaluation
  • Management Services
FY2027 Request
$110.1M
▲ 58% vs FY2026
FY2026 Enacted
$69.8M
▼ 12% vs FY2025
FY2025 Actual
$79.3M
Prior year

OCX Block 3F — one RDT&E project inside PE 1206423SF. Congressional marks are recorded on the program element, not on a project.

Project 67A023 — OCX Block 3F — requests $110.1M in FY2027, 33% of the $332.3M requested for program element 1206423SF. Year over year it grows 58% against FY2026.

Funding trajectory

Project 67A023 funding, FY2025–FY2031

Prior years are actuals, the budget year is the request, and the outyears are the FYDP plan. Estimate types are colored and never summed into one figure. Projects carry the full five-year plan; the activities inside them stop at the budget year.

255075100079.3FY25ACTUAL69.8FY26ENACTED110.1FY27REQUEST73.7FY2829.6FY2916.9FY307.0FY31
Actual Enacted Request Outyear (FYDP)
Fiscal YearEstimate TypeAmount ($M)
FY2025Actual79.3
FY2026Enacted69.8
FY2027Request110.1
FY2028Outyear73.7
FY2029Outyear29.6
FY2030Outyear16.9
FY2031Outyear7.0
Inside the project

1 accomplishment / planned program

The R-2A exhibit. Activities carry the prior, current and budget year only — no five-year plan — and they are descriptive: coverage is partial and they do not always add back to the project, so count them, never total them. Opening lines only here — the full year-by-year narrative is on the project page.

FY2025 actual$79.3M
FY2026 enacted$69.8M
FY2027 request$110.1M

Complete software development to enable Global PNT C2 and continue software development for RMP checkout and Rapid Warfighter Effects (RWE) initial operations. Continue integration activities that support the validation of requirements with use of the OCX 3F GPS System Simulator. Deploy GPS IIIF Launch and Checkout System hardware…

Read the FY2027 plan →
Project 67A023 — every activity in full →
Who's building it

Named performers on project 67A023

Performers named in the R-3 exhibit under this project. Share is of the project's whole FY2027 R-3 total — the same denominator the program-element split uses, so the two read on one scale and will not sum to 100% when unnamed or government work is in the mix. Budget-justification contract funding, not obligations.

RTX / Raytheon
$88.9M · 81%
TASC
$3.8M · 3.5%
Project detail

What project 67A023 buys

Mission Delta 31 is developing the Next Generation Operational Control System 3 Follow-on (OCX 3F) (Project 67A023) for Guardians across Position, Navigation, and Timing. As a result, the Service will improve readiness and operational reach of existing force structure. OCX Block 3 Follow-on (OCX 3F) will modify OCX Command and Control (C2) for new Global Positioning System (GPS) III Follow-On (GPS IIIF) satellites and Military GPS User Equipment (MGUE) system capabilities, including Regional Military Protection (RMP) high-powered military signal to strengthen U.S. and allied forces' GPS resiliency in contested environments to mitigate future threats, and the ability to rapidly reconfigure GPS IIIF satellites to create time-critical warfighter effects. OCX 3F will maintain backward compatibility with the existing OCX capabilities to support the legacy GPS constellation as well as GPS IIIF. OCX 3F includes critical functions necessary to launch, command, control, and monitor GPS IIIF spacecraft, collect and integrate RMP high-power regional Military Code (M-Code) signals for rapid warfighter effects, and support GPS IIIF auxiliary payloads, including Search and Rescue (SAR) and Nuclear Detonation (NUDET) Detection System (NDS).

R-3 lines of work
  • Product Development
  • Management Services