Do the observations agree with the predictions?

Inspect positive contrasts, reversals and directional tests separately. Agreement in level alone cannot identify a ship.

Highlighted ships →Higher / lower pairs →Across AIS sets →Spatial consistency →Phase & delay →

Phase and GCC-PHAT views

Available

Scope & evidence

63 full-complex bundles; HA03 phase and lag remain unavailable

Phase and GCC-PHAT products are available for H01W, H08S, H10N, and H10S recording intervals whose response supports timing. HA03 has magnitude-only products and cannot fill this role.

analysis/waveform-ais-arrival-first-products/v2/full-active-representation-completion-v1/seal-receipt.json

H01W spectrogram method stability

Available

Scope & evidence

6 passages × 4 subjects; 24 unpooled comparisons

Periodic-Hann and five-taper DPSS estimates use identical samples, masks, windows, and frequency bins. The result measures estimator sensitivity, not source attribution.

analysis/h01w-spectrogram-method-stability-v1/final-seal-receipt.json