Local Level Lab

Airborne measurements. Open methods.

Updated airborne findings

46 globe preferences, 0 flat preferences, 7 unresolved among 53 preselected stretches.

The completed nine-stretch assessment added three complete globe preferences, bringing the tally to 44/0/9. The subsequent hybrid-solver trial resolves two more. Every added result passed six primary fits, its predetermined repeat and both controls. These are numerical preferences, without a calibrated significance level. All 46 globe-preferred stretches also favor the specified background field; its cause is not determined.

Latest matched comparison

The eight-start hybrid trial used 471 native sweeps; six fits passed, including both controls. Two targets pass their full comparisons and repeats. The third target fails its primary and repeat stability checks and remains unresolved. The run did not qualify every target; individually complete comparisons are reported separately.

Newly completed source UTC interval IMU type Minutes Ground speed min / median
ILVIS0_applanix_55295_20100409_610_LVIS_09Apr10.013 2010-04-09T12:56:16.115058Z to 2010-04-09T13:00:20.115282Z 21 4.07 834.3 / 841.7 km/h
ILVIS0_applanix_57322_610_DMS_27Oct15bDMS.013 2015-10-27T14:27:23Z to 2015-10-27T14:36:31Z 21 9.13 829.8 / 834.7 km/h

Seven unresolved stretches

Six stretches from the earlier nine-stretch assessment have not yet been tested with the hybrid solver. Their latest ledgers contain eleven unfinished primary fits. The seventh is the third hybrid-trial target: its primary and repeat stop before their evaluation caps. Their endpoints closely agree, but fresh corrections still move receiver predictions beyond the fixed objective and one-millimetre axis-RMS stability limits. More iterations alone do not explain that stop. A separately frozen assessment of the other six and a focused diagnosis of that last target are the next numerical work. No previous allowance is reopened.

All stretches and source tracks · Comprehensive metadata

Earlier 41/0/12 findings remain an unchanged historical snapshot. No observations, intervals, physical bounds, receiver weights or clocks were changed by this metadata publication.