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Postprocessing and signal corrections for multibeam echosounder images
Oceans '97. MTS/IEEE Conference Proceedings, 2002Multibeam echosounders own the attractive ability to simultaneously provide a bathymetric map and a sonar image of an insonified area. Nevertheless, their increasing resolution and data rate underline classical approximations used by the manufacturers in the real time algorithms. This leads to artefacts in sonar images and to difficulties in geological
L. Hellequin, X. Lunton, J.M. Augustin
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Quantifying acoustic backscatter of seafloor using multibeam echosounder
The Journal of the Acoustical Society of America, 2021Multibeam echosounder is one of the most important technology for carrying out hydrographic surveys, benthic habitat mapping, marine fisheries, and seafloor surveys. The advantage of multibeam echosounder were produced simultaneously bathymetric and acoustic backscatter.
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Panel-based bathymetric SLAM with a multibeam echosounder
2017 IEEE Underwater Technology (UT), 2017A bathymetric Simultaneous Localization and Mapping (SLAM) algorithm is presented which is capable of mapping elevation changes in undulating seabed terrain and simultaneously localizing the vehicles position relative to the constructed terrain elevation map. The algorithm enables to marine vehicles navigate and build a map autonomously in a GPS-denied
Taeyun Kim, Jinwhan Kim
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2017
Multibeam echosounders have revolutionized our ability to resolve seabed geomorphology and regionally define its substrate. Using a fan of narrow acoustic beams, the slant ranges, angles and returned backscattered intensity can be employed to define the seabed elevation and infer the substrate.
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Multibeam echosounders have revolutionized our ability to resolve seabed geomorphology and regionally define its substrate. Using a fan of narrow acoustic beams, the slant ranges, angles and returned backscattered intensity can be employed to define the seabed elevation and infer the substrate.
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Seafloor Acoustic Backscatter Measurements With Multibeam Echosounders
Proceedings of Offshore Technology Conference, 2010Abstract This paper is a tutorial on the fundamentals of seafloor acoustic backscatter measurements made with multibeam echosounders. Such measurements are used to infer seafloor geoacoustic properties, including: acoustic impedance contrast at the water/sediment interface, mean sediment grain size, spectral ...
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Map based underwater navigation using a multibeam echosounder
IEEE Oceanic Engineering Society. OCEANS'98. Conference Proceedings (Cat. No.98CH36259), 2002This paper describes a navigation system for underwater vehicles (UV) using bathymetric profiles. The UV localisation by matching a local bathymetry within a reference map aims to avoid the use of transponder-based positioning systems which need a costly preparation.
M. Sistiaga +3 more
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A new deep water multibeam echosounder-TSM 5265
IEEE Oceanic Engineering Society. OCEANS'98. Conference Proceedings (Cat. No.98CH36259), 2002The MARION DUFRESNE is a multipurpose oceanographic vessel managed by the French Polar Institute. This vessel is equipped with a new generation deep water multibeam echosounder TSM 5265 using new signal processing for bathymetry and new techniques for imagery and sub-bottom profiling.
J.F. Denis, B. Ollivier
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Seabed classification from multibeam echosounder data using statistical methods
Proceedings of OCEANS '93, 2002The development of reliable methods for automatic seabed classification enjoys widespread interest at the present time. In this article, statistical methods for seabed classification from backscatter sonar data are investigated. The classification rule is derived from the Bayes decision rule and involves a probability model of the features extracted ...
R.B. Huseby +3 more
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Improving spatial resolution of interferometric bathymetry in multibeam echosounders
The Journal of the Acoustical Society of America, 2008Most multibeam echosounders used in seafloor mapping use the interferometry method for bathymetry measurement, based on the zero-crossing of the phase difference between two sub-arrays. In this approach, only one sounding is computed per formed beam, and the spatial resolution is linked to the beam footprint extent. Using the whole content of the phase
Gerard Llort-Pujol +2 more
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Seafloor quantification and characterization using multibeam echosounder backscatter data
The Journal of the Acoustical Society of AmericaIndonesia has many small islands to manage for sustainable development goals. The urgency of this research lies in seafloor classification technology using acoustic technology. Seafloor classification plays a crucial role in mapping and monitoring marine ecosystems, marine resource management, research, military operation, and engineering activities ...
Henry Manik +3 more
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