System anatomy · 06

Navigation integrity and sensor disagreement

Design for GNSS loss or spoofing, acoustic uncertainty, turbidity, multipath, drift and conflicting observations.

Evidence statusCross-domain mission framework · vehicle, operation and jurisdiction validation requiredLast reviewed: 15 August 2026
06

FUURAA thesis

Navigation integrity requires detecting when position confidence is insufficient, not only producing a position estimate.

Engineering map

Turn the title into engineering objects that can be observed, measured and reviewed.

Each layer states the boundary to establish and the evidence needed for the next decision.

01

Sources

Document GNSS, inertial, visual, acoustic, depth, chart and traffic inputs.

02

Integrity

Set uncertainty, consistency and timeliness thresholds for each mission phase.

03

Response

Define hold, slow, reroute, surface, return or abort when integrity falls.

Verification questions

Write the questions first, then decide whether a demo, test, pilot or operating record can answer them.

Each question needs an object, conditions, denominator, threshold and accountable decision owner.

  1. 01

    How is corrupted navigation detected?

  2. 02

    Which sensors share a common failure?

  3. 03

    Can the vehicle bound its own uncertainty?

  4. 04

    What happens before a geofence is crossed?

Evidence to preserve

Enable the next reader to reconstruct conditions, results, failures and the decision.

A conclusion alone loses reviewability; raw records, configuration and exclusions matter too.

  1. 01

    Evidence package 1

    Navigation dependency and threat model

  2. 02

    Evidence package 2

    Injected-fault and disagreement results

  3. 03

    Evidence package 3

    Integrity alert and response trace

Scope boundary

State what this evidence still cannot be generalised to.

Sources and evidence status

Read standards scope, measurement evidence and application conclusions separately.

Source dates and review status remain visible; external sources open in a new tab.