Three-dimensional single-hydrophone tracking of a sperm whale demonstrated using workshop data from the bahamas
Bibliographic record
Abstract
A passive acoustic localization method for tracking the movement of a clicking sperm whale in threedimensions using data from just one hydrophone is demonstrated using data made available for the 3rd International Workshop on Detection and Classification of Marine Mammals.One recording contains sperm whale clicks recorded on a bottom-mounted hydrophone on a steep slope of the Navy's AUTEC test range.When the direct-path acoustic ray arrivals from several clicks are time-aligned, persistent associated multipath arrivals of reflected ray paths can be identified for each click event and used for localization.Although the use of multipath arrival information is a standard procedure for range-depth tracking, a three dimensional estimate of whale position can be obtained from the same multipath information with knowledge of an azimuthally-dependent environment relative to the receiver.In this case, azimuthal distinction arises from varied bathymetry.Multipath arrival patterns are matched to unique range-, depth-, and azimuth-dependent modeled arrival patterns to make an estimate of whale location.A three dimensional whale track in range, depth, and bearing from the fixed hydrophone is presented. s o m m a i r eOn dmontre dans cet article une mthode de localisation acoustique passive pour suivre la trace d'un cachalot cliquant dans les trois dimensions utilisant les donnes d'un seul hydrophone, en utilisant les donnes disponibles partir du Troisime Atelier Internationale sur la Dcouverte et la Classification des Mammifres Marins.On a enregistr les bruits secs du cachalot enregistr par un hydrophone mont au fond sur une pente raide du champ d 'essai d 'AUTEC de la Marine Amricaine.Quand les arrives des rayons acoustiques des plusieurs cliques avec des trajectoires directes sont aligns par intervalles, des arrives multi-trajectoires associes et persistantes des trajectoires de rayons reflts peuvent tre identifies pour chaque vnement d 'une clique et peuvent tre utilises pour la localisation.Bien que l 'utilisation de l'information d 'arrive multi-trajectoire soit une procdure normale pour suivre la trace porte-profondeur, une estimation en trois dimensions de la position des cachalots peut tre obtienne en utilisant les mmes informations multi-trajectoires si l'on connait l 'environnement azimuthalemmentdpendent relatif au rcepteur.Dans ce cas, la distinction azimutale drive de la bathymtrie varie.Les schmas des arrives multi-trajectoires sont attribus aux schmas uniques qui dpendent de la porte, de la profondeur, et de l'azimut pour faire une estimation d 'emplacement du cachalot.Une trajectoire en trois dimensions qui montre la porte, la profondeur, et le rapport du hydrophone fixe est donne.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".