Local Level Lab

Airborne measurements. Open methods.

Saved-bound unit audit

The six bounds completed, but their comparison adapter checked raw-coordinate coefficients against metre-scaled training coefficients. That is a unit mismatch. The original six failed labels are preserved. This audit converts the saved 27 physical and 24 common-error columns into matching units, with no bound rerun.

Candidate / removal Scaled coefficients exactly equal Largest coefficient difference N / E / height allowance ratios
Globe with specified field / zero Yes 0 0.982813 / 0.978224 / 0.999978
Globe with specified field / profiled Yes 0 0.984158 / 0.979309 / 0.999977
Globe with zero field / zero Yes 0 0.975833 / 0.963066 / 0.999988
Globe with zero field / profiled Yes 0 0.980135 / 0.969434 / 0.999986
Flat disc / zero Yes 0 0.999999 / 0.988666 / 0.999999
Flat disc / profiled Yes 0 0.999995 / 0.991634 / 0.999995

The recomputed allowances improve by at most about 3.7%, and height changes by less than 0.003%. This smaller-domain recalculation therefore offers little help with the main vertical uncertainty. It does not establish narrower complete prediction ranges or observational coverage.

Candidate / removal Position remainder, height (m) Included force remainder (m) Lever remainder (m)
Globe with specified field / zero 0.12624 0.02238 0.01493
Globe with specified field / profiled 0.13494 0.02238 0.01869
Globe with zero field / zero 0.08420 0.02238 0.01119
Globe with zero field / profiled 0.09999 0.02238 0.01796
Flat disc / zero 0.05338 0.02238 0.00865
Flat disc / profiled 0.07181 0.02238 0.01653

The force term is included in the position remainder and must not be added again. These are reported bounds, not independent physical error estimates. The remaining position-propagation terms are the next place to inspect; another repetition of the same smaller-domain calculation is not justified.

Any nonzero coefficient difference must be retained or explicitly bounded when constructing a future inequality. The data file reports exact transfer-radius terms; no coefficient is silently replaced here.

Original comparison · Next step · Roadmap.