Quantifying bedform migration using multi-beam sonar

Quantifying the Acoustic Packing Density of Fish Schools with a Multi- Beam Sonar

INTRODUCTION Multi-beam sonar (MBS) systems have been traditionally used to acquire bathymetric data for mapping purposes. As such, they were developed to produce a swath of wide angle perpendicular to the vessel track (typically upwards of 120°), narrow angle in the alongtrack direction (typically in the order of 0.5-1.5°), and to store only the data from depths near to the seafl oor. The MBS ...

Evaluation of Four Supervised Learning Methods for Benthic Habitat Mapping Using Backscatter from Multi-Beam Sonar

An understanding of the distribution and extent of marine habitats is essential for the implementation of ecosystem-based management strategies. Historically this had been difficult in marine environments until the advancement of acoustic sensors. This study demonstrates the applicability of supervised learning techniques for benthic habitat characterization using angular backscatter response d...

Object representation for multi-beam sonar image using local higher-order statistics

Multi-beam sonar imaging has been widely used in various underwater tasks such as object recognition and object tracking. Problems remain, however, when the sonar images are characterized by low signal-to-noise ratio, low resolution, and amplitude alterations due to viewpoint changes. This paper investigates the capacity of local higher-order statistics (HOS) to represent objects in multi-beam ...

Erratum to: Object representation for multi-beam sonar image using local higher-order statistics

Using a Near-Bed Sediment Flux Sensor to Measure Wave Formed Bedform Migration and Formation Processes and Sonar Observation of Mine Burial

Our research program focuses on identifying and quantifying sediment erosion, transport, and deposition processes on the continental shelf through state of the art observational techniques in both fine grained and sandy environments. In sandy environments our goal is to understand the detailed interactions and feedbacks between hydrodynamics, bedforms, and the resulting sand transport. In fine ...