Local Level Lab

Airborne measurements. Open methods.

Saved timing-boundary review

Question

Do the two failed fits in the fresh calibration place receiver queries close to internal IMU integration boundaries? Proximity would guide a later diagnostic; it would not establish the cause of the failure or qualify either fit.

Fixed scope

Read only the two saved starts for seed 281474977010693, rate-sample errors, specified-field globe, with field removal allowed. Use the closed calibration manifest, summary, artifact hashes and unchanged failure labels.

The shared lll.prediction_phase_review.review_clock routine reconstructs only the declared uniform clock. It must reproduce the saved little-endian float64 hashes of every interval duration and query time before reporting distances. It generates no inertial observations, receiver positions, truth or noise.

One saved-data review, at most two fitted records, one thread and a ten-minute cooperative ceiling. No optimizer starts, native calls, noise draws, retries, threshold changes or use of protected aircraft data. Known-answer tests check boundary hits, both signs, invalid clocks, hash mismatches and retained failures.

Deliverables and next gate

Preserve a source-bound report and per-query CSV. Report the numerical stopping failure separately from timing proximity. Any native derivative probe, revised solver or further calibration needs its own reviewed finite plan.

Calibration outcome · Roadmap.