Results 131 to 140 of about 2,333 (168)

Plasmonic nanoparticle sensors: current progress, challenges, and future prospects.

open access: yesNanoscale Horiz
Kant K   +45 more
europepmc   +1 more source

Detection, localization, and classification of multiple ocean vehicles over continental-shelf regions with passive ocean acoustic waveguide remote sensing

The Journal of the Acoustical Society of America, 2017
Multiple ocean vehicles, including both surface ships and unknown submerged vehicles, can be simultaneously monitored over instantaneous continental-shelf scale regions via passive ocean acoustic waveguide remote sensing (POAWRS) by employing a large-aperture densely sampled coherent hydrophone array system.
Chenyang Zhu   +5 more
openaire   +2 more sources

Passive ocean acoustic waveguide remote sensing of vocalization behavior and spatial distribution of diverse marine mammal species in the Norwegian and Barents Sea

The Journal of the Acoustical Society of America, 2023
Leveraging data acquired using a 160-element coherent hydrophone array deployed in the Norwegian and Barents Seas during spring 2014, and the passive ocean acoustic waveguide remote sensing (POAWRS) technique is employed to enable instantaneous wide-area monitoring of marine mammal vocalizations over expanses exceeding 100 km in diameter.
Hamed Mohebbi-Kalkhoran   +6 more
openaire   +1 more source

Population density imagery of migrating herring shoals by ocean acoustic waveguide remote sensing.

The Journal of the Acoustical Society of America, 2009
Ocean acoustic waveguide remote sensing (OAWRS) is a bistatic multibeam wide area sonar system that enables unaliased monitoring of fish populations over ecosystem scales. This allows us to quantify the formation processes of vast shoals of Atlantic herring (Clupea harengus) containing hundreds of millions of individuals, imaged during the Autumn 2006 ...
Zheng Gong   +15 more
openaire   +1 more source

Spawning behavior and spatial distribution of Atlantic herring on Georges Bank revealed by ocean acoustics waveguide remote sensing

The Journal of the Acoustical Society of America, 2007
An ocean acoustics waveguide remote sensing (OAWRS) system was deployed in the Gulf of Maine, near Georges Bank to image Atlantic herring and other fish population from September–October 2006. OAWRS provides spatially unaliased imaging of herring over wide areas, spannning over 100 km diam.
Zheng Gong   +8 more
openaire   +1 more source

Spawning Behaviour and Spatial Distribution of Atlantic Herring on Georges Bank Revealed by Ocean Acoustics Waveguide Remote Sensing

The Journal of the Acoustical Society of America, 2008
An ocean acoustics waveguide remote sensing (OAWRS) system was deployed in the Gulf of Maine, near Georges Bank to image Atlantic herring and other fish populations from Sep-Oct 2006. OAWRS provides spatially unaliased imaging of herring over wide areas, spannning over 100 km diameter.
Purnima Ratilal   +12 more
openaire   +1 more source

Effects of multiple scattering, attenuation, and dispersion on fish population density imaging with ocean-acoustic waveguide remote sensing.

The Journal of the Acoustical Society of America, 2010
Ocean-acoustic waveguide remote sensing (OAWRS) instantaneously images and continuously monitors fish populations distributed over continental-shelf scale regions. It is shown that the areal population density of fish groups can be estimated from their incoherently averaged, broadband matched filtered scattered intensities.
Mark Andrews   +2 more
openaire   +1 more source

Spatial and temporal coherence of scattered field from large fish groups instantaneously imaged with ocean acoustics waveguide remote sensing (OAWRS).

The Journal of the Acoustical Society of America, 2009
Wide area sonar system, such as OAWRS (ocean acoustics waveguide remote sensing), can instantaneously image large shoals of fish spanning tens of kilometers from long ranges in an ocean waveguide. An analytic and numerical model is developed for the spatial and temporal coherence of the scattered field from a large group of fish in a shallow water ...
Purnima Ratilal   +3 more
openaire   +1 more source

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