Results 141 to 150 of about 2,333 (168)
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The Journal of the Acoustical Society of America, 2008
The mean low-frequency target strength (TS) of spawning Atlantic herring populations in the Gulf of Maine is estimated from the experimental data acquired during September–October 2006 near the northern flank of Georges Bank. A low-frequency OAWRS system with an instantaneous imaging diameter of 100 km was deployed to provide spatially unaliased ...
Zheng Gong +14 more
openaire +1 more source
The mean low-frequency target strength (TS) of spawning Atlantic herring populations in the Gulf of Maine is estimated from the experimental data acquired during September–October 2006 near the northern flank of Georges Bank. A low-frequency OAWRS system with an instantaneous imaging diameter of 100 km was deployed to provide spatially unaliased ...
Zheng Gong +14 more
openaire +1 more source
The Journal of the Acoustical Society of America
Ocean Acoustic Waveguide Remote Sensing (OAWRS) has been used successfully in continental shelf regions as a method of monitoring fish populations. In this work, we explore the application of OAWRS to a region of Lake Superior as a tool for observing fish behavior on an ecologically important spawning bed, Buffalo Reef.
Evan Lucas +4 more
openaire +1 more source
Ocean Acoustic Waveguide Remote Sensing (OAWRS) has been used successfully in continental shelf regions as a method of monitoring fish populations. In this work, we explore the application of OAWRS to a region of Lake Superior as a tool for observing fish behavior on an ecologically important spawning bed, Buffalo Reef.
Evan Lucas +4 more
openaire +1 more source
2008
Abstract : Acoustic clutter is the primary problem encountered by active sonar systems operating in Continental Shelf environments. Clutter is defined as any return from the environment that stands prominently above the diffuse and temporally decaying reverberation background and so can be confused with or camouflage returns from an intended target ...
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Abstract : Acoustic clutter is the primary problem encountered by active sonar systems operating in Continental Shelf environments. Clutter is defined as any return from the environment that stands prominently above the diffuse and temporally decaying reverberation background and so can be confused with or camouflage returns from an intended target ...
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A Unified Approach to Passive and Active Ocean Acoustic Waveguide Remote Sensing
2012Abstract : OBJECTIVES AND APPROACH: Ocean acoustic waveguide remote sensing (OAWRS) is the basis for the primary undersea surveillance systems of the US Navy for both passive and active detection, localization, imaging and monitoring. Here OAWRS refers to all applications of acoustic remote sensing in an ocean waveguide.
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The Journal of the Acoustical Society of America, 2009
Wide area sonar such as ocean acoustic waveguide remote sensing (OAWRS) has been shown to be a useful tool for instantaneously imaging large shoals of fish distributed over continental shelf regions. Here, we show that the population density of fish groups can be accurately estimated by using incoherent averaging of the matched filtered returns ...
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Wide area sonar such as ocean acoustic waveguide remote sensing (OAWRS) has been shown to be a useful tool for instantaneously imaging large shoals of fish distributed over continental shelf regions. Here, we show that the population density of fish groups can be accurately estimated by using incoherent averaging of the matched filtered returns ...
openaire +1 more source
Reducing environmental plastic pollution by designing polymer materials for managed end-of-life
Nature Reviews Materials, 2021Kara Lavender, Ramani Narayan
exaly
Nonreciprocity in acoustic and elastic materials
Nature Reviews Materials, 2020Hussein Nassar +2 more
exaly
Tara Oceans: towards global ocean ecosystems biology
Nature Reviews Microbiology, 2020Shinichi Sunagawa +2 more
exaly