Local Level Lab

Airborne measurements. Open methods.

Geographic-step and antenna-observation bounds

72/72 identities passed in 13.94 seconds. Charged calls: 4,680 C steps, 72 C++ tangents and 6,624 independent references. All inputs are generated; no archive reads, full-record sweeps or optimizer starts.

Candidate Passed Maximum C++ Jacobian discrepancy Largest resolved remainder / bound
sphere_rotating 24/24 2.84e-14 m / normalized parameter 0.999974
sphere_still 24/24 2.84e-14 m / normalized parameter 0.999974
flat_still 24/24 2.16e-14 m / normalized parameter 0.999974

All 27 columns remain present. Timing is either fixed at the endpoint or varies strictly inside one packet. Intervals crossing packet boundaries, repeated-step usefulness, long-record arithmetic and observational error assessment remain unqualified. Roundoff-limited comparisons are retained separately; the displayed remainder ratio excludes bounds below the declared comparison tolerance.

Proof and frozen limits · Local-step controls · Roadmap.