LJP · ASSET GROUP
Sovereign PNT & Resilient Timing · Technical Reference

Navigation Integrity

When should navigation information be trusted, qualified, or rejected?

Navigation integrity concerns whether navigation information is trustworthy for a stated operation and whether the user receives a timely indication when it should not be used. The required error bounds, alerting behavior, monitoring, and response depend on the application; integrity is distinct from accuracy and availability.

Why it matters: Incorrect navigation information can be more hazardous than unavailable information because a system may continue acting on a plausible but misleading result. Buyers must therefore specify acceptable risk, monitoring, alerting, and operational response for the intended use.

§1 — Definition

Navigation Integrity

The degree to which navigation information and its associated status can be relied upon for a stated use, including the ability to identify when that reliance may no longer be appropriate.

§2 — Relationships

Closest comparison and adjacent concepts.

Navigation Integrity is closest to Assured PNT. Integrity supplies evidence about the correctness and status of navigation information; assurance determines whether the combined evidence is sufficient for mission reliance.

Difference

What separates them

Navigation Integrity addresses the trustworthiness and alerting status of navigation information; Assured PNT is the broader mission judgment about whether PNT is fit for reliance.

Relationship

How they work together

Integrity monitoring and status can provide essential assurance evidence, while assurance also considers continuity, cybersecurity, operating context, procedures, and other controls.

See also

§3 — Standards and Authority

Where the terminology comes from.

The GPS Standard Positioning Service Performance Standard defines integrity in terms of trust in positioning or timing information and timely alerts, while FAA guidance shows how integrity monitoring affects operational use. LJP does not generalize aviation thresholds to other sectors.

Primary authority ↗

Global Positioning System Standard Positioning Service Performance Standard

United States Government · GPS SPS Performance Standard, 5th Edition

Defines GPS signal-in-space integrity and the role of timely alerting for positioning and timing information.

5th Edition, April 2020

The performance standard applies to GPS SPS signal-in-space commitments, not to all navigation systems.

Primary authority ↗

Navigation Aids — En Route

Federal Aviation Administration · United States AIP ENR 4.1

Explains Receiver Autonomous Integrity Monitoring, fault detection, feedback, and operational response when GPS integrity is unavailable.

FAA material is authoritative for its aviation context; other applications require their own integrity criteria.

§4 — Evaluation

Apply the distinction to the decision at hand.

The namespace supports conversations where incorrect or misleading navigation information can be more consequential than simple unavailability.

Continue to a controlled evaluation.

§5 — LJP Foundation

How this capability fits the package.

Navigation Integrity frames the trust decision around navigation information, status, timely alerting, and use context without asserting a universal threshold, monitoring design, alert limit, or certification regime.

Integrity provides the trustworthiness question that complements continuity, assurance, source combination, and alternative-source availability.

§6 — Machine-Readable Resources

Public identity and discovery resources.

§7 — Credibility Boundary

What this reference does not claim.

This namespace does not define integrity algorithms, alert limits, monitoring implementations, certification criteria, safety requirements, or operational thresholds.

This namespace is an LJP editorial construct. It claims no standards ownership or external endorsement and selects no vendor or implementation; protected methods and transaction materials are not disclosed.

Evaluate Navigation Integrity in context.

Move from public technical orientation to a controlled package evaluation.

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