# Precise Timing and Astronomy

**R-2A activity** of project 2344 — Precise Time and Astrometry  
**Program element:** 0603207N — Air/Ocean Tactical Applications  
**Component:** U.S. Navy · **Budget Activity:** 4  
**Vintage:** President's Budget PB2027  
**Canonical URL:** https://hitchintel.com/programs/0603207N/2344/a0  
**Parent:** https://hitchintel.com/programs/0603207N/2344

## Summary

This activity requests $45.2M in FY2027, 100% of project 2344, up 569% on FY2026. The R-2A exhibit describes it across FY2026–FY2027, including what the FY2027 money is planned to buy.

## What the FY2027 request buys

**FY2027 planned work.** * Optical Clock Development: Calcium Clock Full Operating Capability of hot beam clock and prototyping cold beam clock * Optical Lattice Clock Development: Full Operating Capability of first lattice clock * Multi Measurement System: validation and testing of operational implementation * Earth Orientation Combination and Prediction Optimal Estimation: spline research and development * Cislunar and solar satellite ephemeris: Full Operating Capability * Earth Orientation Monitoring of Foreign GNSS: Full Operating Capability * Next Generation Secure Time Transfer v2: testing for additional security and researching 1-way, 2-way capabilities * Fund post-doctoral program to support basic research in Precise Time and Astrometry for Optical Clock Development, Optical/Radio offsets in Active Galactic Nuclei (AGN), and next generation Infrared catalog development * Optical Signal Distro Network initial research and development * Improved AAM/OAM: integration of AAM/OAM models * High Resolution Subarray Antenna initial research and development * Optical Time Transfer initial research and development * 1-way 2-way time transfer initial research and development

**FY2026 to FY2027 change.** Increase of $38.438M from FY 2026 to FY 2027 results from development of High Resolution Subarray Antenna, optical time transfer development, and 1-way 2-way time transfer development.

## Before the request year

**FY2026 plans — current year.** *Time Transfer: Fiber (Advanced Time and Frequency Transfer) and Two-Way time transfer (Next Generation Secure Time Transfer v1) development --Full Operating Capability * Optical Clock Development: Calcium Clock Initial Operating Capability * Optical Lattice Clock Development Initial Operating Capability * Multi-Measurement System: Initial Operating Capability * Earth Orientation Combination and Prediction Optimal Estimation Investigation: Validate R&D code implementation and test * Cislunar and solar satellite ephemeris research and development * Earth Orientation Monitoring of Foreign GNSS experiment: Begin validation operational implementation * Fund post-doctoral program to support basic research in Precise Time and Astrometry for Optical Clock Development, Optical/Radio offsets in Active Galactic Nuclei (AGN), and next generation Infrared catalog development * Improved AAM/OAM: initial research and development

## Funding

| Fiscal Year | Estimate Type | Amount ($M) |
|---|---|---|
| FY2025 | Actual | 6.0 |
| FY2026 | Enacted | 6.8 |
| FY2027 | Request | 45.2 |

> 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 Navy RDT&E Budget Justification, Exhibit R-2A, PE 0603207N project 2344 (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.*