Results 111 to 120 of about 48,682 (230)
Miniature sonar fish tag [PDF]
, 1975 Self-powered sonar device may be implanted in body of fish. It transmits signal that can be detected with portable tracking gear or by automatic detection-and-tracking system. Operating life of over 4000 hours may be expected.
Ferguson, R. L., Lovelady, R. W.
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In this activity, students will learn about the bathymetry of Hudson Canyon, a submarine canyon on the Atlantic coast of North America. As they study Hudson Canyon, they will compare and contrast topographic maps and bathymetric maps, investigate the ...
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Data handling methods and target detection results for multibeam and sidescan data collected as part of the search for SwissAir Flight 111 [PDF]
, 1999 The crash of SwissAir Flight 111, off Nova Scotia in September 1998, triggered one of the largest seabed search surveys in Canadian history. The primary search tools used were sidescan sonars (both conventional and focussed types) and multibeam sonars ...
Bradford, Jim +5 more
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Olympic Coast National Marine Sanctuary Habitat Mapping: Survey report and classification of side scan sonar data from surveys HMPR-114-2004-02 and HMPR-116-2005-01. [PDF]
, 2006 The Olympic Coast National Marine Sanctuary (OCNMS) continues to invest significant resources into seafloor mapping activities along Washington’s outer coast (Intelmann and Cochrane 2006; Intelmann et al. 2006; Intelmann 2006).
Cochrane, Guy R., Intelmann, Steven S.
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Frontiers in PhysicsThe Frequency Modulation Combined (FMC) waveform has delay (range)-Doppler (velocity) coupling resolution, and the traditional nonlinear high-resolution algorithms represented by Point-wise Product (PP) and Point-wise Minimization (PM) have good anti ...
Yaojun Jia +4 more
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RV Pelagia Cruise 64PE372, 27 Jun - 11 Jul 2013. Flow dynamics and sedimentation in an active submarine channel: a process-product approach [PDF]
, 2014 Novel technologies are providing new opportunities to study the structure and dynamics of submarine sediment-gravity flows; these flows are the dominant process for transfer of sediment into the deep ocean, but are very hard to monitor due their ...
et al,, Wynn, R.B.
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Migration of Net Phytoplankton and Zooplankton in Mendum’s Pond, New Hampshire [PDF]
, 2006 The study examines the vertical distribution and migratory behavior of net phytoplankton and zooplankton of Mendum’s Pond in Barrington, N.H. The cyanobacteria, Microcystis and Aphanocapsa were the dominant net phytoplankton in this lake.
Murby, Amanda L.
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Remote SensingJoint detection and tracking of weak underwater targets are challenging problems whose complexity is intensified when the target is disturbed by reverberation.
Wenrong Yue, Feng Xu, Juan Yang
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Journal of Marine Science and EngineeringConsidering that the information contained in the interference structure of the “target-receiver” path in active sonar is crucial for remote sensing of the target position or the environmental information, this paper studies the method for coherent ...
Jincong Dun +4 more
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Journal of Marine Science and EngineeringIn underwater target recognition scenarios, challenges arise as a result of the limited representational capability of acoustic images with single time-frequency features and poor recognition performance due to class imbalances in sample numbers.
Haoqian Zhang +3 more
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