# PNT Fusion

Canonical URL: https://pntfusion.com/
Publication status: published
Deployment status: active
Version: 2.2.0
Last modified: 2026-07-30
Managed by: LJP Asset Group LLC
Publisher: https://ljpassetgroup.com/
Contact: support@ljpassetgroup.com

## Governing question

How can multiple PNT sources be organized into a coherent result?

## Direct answer

PNT Fusion combines measurements, estimates, or status from multiple authorized sources into a coherent PNT result or decision input. A sound fusion design accounts for source independence, uncertainty, integrity, timing, failure modes, and the possibility that one source can contaminate the result; the appropriate method depends on the mission and architecture.

## Why it matters

Adding sources does not automatically improve resilience or assurance. Sources may share common dependencies, disagree, arrive at different rates, or fail in correlated ways, so buyers must evaluate how inputs are qualified, combined, isolated, and reported.

## Definition

The architectural combination of multiple positioning, navigation, and timing sources or observations to support a more complete mission-relevant PNT result.


## Capability relationships

PNT Fusion is closest to Opportunistic PNT. Opportunistic PNT expands the candidate source set; fusion determines how qualified inputs from dedicated and non-dedicated sources may contribute to a coherent result.

## Standards and authority context

DARPA's Adaptable Navigation Systems program publicly describes architectures that incorporate new and non-traditional sensors, while CISA acquisition guidance emphasizes source diversity, cross-verification, isolation, and recovery. Those sources illustrate evaluation concerns rather than prescribe an LJP fusion design.
- Adaptable Navigation Systems — Defense Advanced Research Projects Agency, DARPA ANS program: https://www.darpa.mil/research/programs/adaptable-navigation-systems
- Federal Positioning, Navigation, and Timing Services Acquisitions Guidance — Cybersecurity and Infrastructure Security Agency, Federal PNT Services Acquisitions Guidance Version 1.0: https://www.cisa.gov/sites/default/files/2024-03/Federal%20Positioning%2C%20Navigation%2C%20and%20Timing%20%28PNT%29%20Services%20Acquisitions%20Guidance%20%28508%29.pdf

## Package

PNT Fusion is one peer Capability Namespace within Sovereign PNT & Resilient Timing at https://sovereignpnt.com/.

## Credibility boundary

This namespace does not publish fusion algorithms, weighting logic, estimation methods, sensor specifications, reference architectures, or performance claims.

## Resources

- Namespace manifest: https://pntfusion.com/namespace.json
- Public ontology: https://pntfusion.com/ontology.jsonld
- Sitemap: https://pntfusion.com/sitemap.xml