Quantification of Wide-Area Norwegian Spring-Spawning Herring Population Density with Ocean Acoustic Waveguide Remote Sensing (OAWRS) by Duane, Daniel, Godo, Olav Rune, Makris, Nicholas

“…Ocean Acoustic Waveguide Remote Sensing (OAWRS) was used to instantaneously measure the areal population density of Norwegian herring over more than one thousand square kilometers in spawning grounds near Ålesund, Norway. …”
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Instantaneous areal population density of entire Atlantic cod and herring spawning groups and group size distribution relative to total spawning population by Godø, Olav Rune, Macaulay, Gavin J., Jech, Josef Michael, Ratilal, Purnima, Makris, Nicholas, Yi, Dong Hoon, Jain, Ankita Deepak, Cho, Byung Gu, Gong, Zheng

“…By a combination of Ocean Acoustic Waveguide Remote Sensing (OAWRS) and conventional sensing methods, first-look images of the instantaneous population density are obtained of entire Atlantic cod spawning groups, stretching for tens of kilometres in the Nordic Seas. …”
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The Effect of Attenuation from Fish on Long-Range Active and Passive Acoustic Sensing in the Ocean by Duane, Daniel Michael

“…In previous investigations of attenuation from fish, population densities were inferred from reductions in the intensity of long-range acoustic signals caused by diel or seasonal shoaling patterns of fish groups. …”
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Maximum Likelihood Deconvolution of Beamformed Images with Signal-Dependent Speckle Fluctuations from Gaussian Random Fields: With Application to Ocean Acoustic Waveguide Remote Se... by Jain, Ankita Deepak, Makris, Nicholas

“…Instantaneous wide area population density images of fish aggregations measured with Ocean Acoustic Waveguide Remote Sensing (OAWRS) are deconvolved to illustrate the effectiveness of this approach in improving angular resolution over conventional planewave beamforming.…”
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Low-frequency target strength and abundance of shoaling Atlantic herring (Clupea harengus) in the Gulf of Maine during the Ocean Acoustic Waveguide Remote Sensing 2006 Experiment by Gong, Zheng, Andrews, Mark, Jagannathan, Srinivasan, Patel, Ruben, Jech, J. Michael, Makris, Nicholas, Ratilal, Purnima

“…The low-frequency target strength of shoaling Atlantic herring (Clupea harengus) in the Gulf of Maine during Autumn 2006 spawning season is estimated from experimental data acquired simultaneously at multiple frequencies in the 300–1200Hz range using (1) a low-frequency ocean acoustic waveguide remote sensing (OAWRS) system, (2) areal population density calibration with several conventional fish finding sonar (CFFS) systems, and (3) low-frequency transmission loss measurements. …”
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Feasibility of Ocean Acoustic Waveguide Remote Sensing (OAWRS) of Atlantic Cod with Seafloor Scattering Limitations by Ignisca, Anamaria, Ratilal, Purnima, Makris, Nicholas, Jain, Ankita Deepak, Yi, Dong Hoon

“…The ratio of the intensity of scattered returns from fish versus the seafloor in any resolution cell typically determines the maximum fish detection range of OAWRS, which then is a function of fish population density, scattering amplitude and depth distribution, as well as the level of seafloor scattering. …”
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