Local Level Lab

Airborne measurements. Open methods.

Do the extreme matrices preserve a rotation?

6/6 physical anchors pass; 36/36 extreme examples are flagged.

The test removes proposed gains and checks a rotation invariant using exact arithmetic. Its dimensionless 1e-8 numerical allowance is not a sensor specification.

Model / removal Anchor passes Flagged / 6 Largest Gram defect norm
Globe with specified field / zero Yes 6 0.873512
Globe with specified field / profiled Yes 6 0.735333
Globe with zero field / zero Yes 6 0.737675
Globe with zero field / profiled Yes 6 0.83194
Flat disc / zero Yes 6 0.815002
Flat disc / profiled Yes 6 0.846205

A flag diagnoses an extreme combination admitted by the relaxed prediction method. Passing does not establish full physical realizability, correct orientation or trajectory fit. This diagnostic changes no prediction interval or aircraft result.

Completed 42/42 matrix checks in 0.6 seconds. Zero new LP proposals, native integration, bounds or original aircraft reads.

Frozen scope · Width diagnosis · Roadmap.