Motion tracking of fish and bubble clouds in synthetic aperture sonar data

Author:

Marston Timothy M.1,Hall Bernard R.2,Bassett Christopher1,Plotnick Daniel S.3,Kidwell Autumn N.4

Affiliation:

1. APL, University of Washington 1 , Seattle, Washington 98103, USA

2. Washington State University 2 , Pullman, Washington 99163, USA

3. ARL, Penn State University 3 , State College, Pennsylvania 16801, USA

4. ARL, University of Texas 4 , Austin, Texas 78758, USA

Abstract

Data captured by a Synthetic Aperture Sonar (SAS) near Mobile Bay during the 2021 Undersea Remote Sensing experiment funded by the Office of Naval Research reveals near surface bubble clouds from wave breaking events and a large aggregation of fish. Tools developed for using SAS data to image hydrodynamic features in the water column were applied to observations of the bubble clouds and fish aggregation. Combining imagery and height data captured by the sonar array with a detection and tracking algorithm enables the trajectories, velocities, and behavior of fish in the aggregation to be observed. Fitting the velocity and height data of the tracked objects to a Gaussian mixture model and performing cluster analysis enables an estimate of the near-surface ambient velocity via observation of the movement of the bubble traces and the general direction of motion of the fish aggregation. We find that the velocity traces associated with bubbles are consistent with ambient currents as opposed to the direction of propagating wave crests while velocities of fish indicate relatively large, pelagic species.

Funder

Office of Naval Research

Publisher

Acoustical Society of America (ASA)

Reference51 articles.

1. D. W. Hawkins , “ Synthetic aperture imaging algorithms: With application to wide 273 bandwidth sonar,” Ph.D. thesis ( University of Canterbury, Canterbury, New Zealand, 1996).

2. Design and experimental results of a 300-kHz synthetic aperture sonar optimized for shallow-water operations;IEEE J. Oceanic Eng.,2009

3. Interferometric synthetic aperture sonar for AUV based mine hunting: The SENSOTEK project,2001

4. Using synthetic aperture sonar as an effective hydrographic survey tool,2014

5. Shallow water surveying using experimental interferometric synthetic aperture sonar;Mar. Technol. Soc. J.,2009

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