Advances in multibeam echo sounder technology

Hammerstad, E.; Asheim, S.; Nilsen, K. E.; Bodholt, Helge

doi:10.1109/oceans.1993.325956

Cited by 10 publications

(2 citation statements)

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“…Classical surveying systems (sidescan sonar and multi-beam echo sounders) scan the seafloor along successive bands in the across-track direction [28][29][30]. Hence, each individual patch of the seafloor is observed under very few incidence angles [19,31] because usual operating conditions do not provide much overlap of the seafloor coverage.…”

Section: Introductionmentioning

confidence: 99%

Seafloor segmentation using angular backscatter responses obtained at sea with a forward-looking sonar system

et al. 2015

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a b s t r a c tSegmentation of the seabed is addressed by exploiting the local angular backscatter acoustic responses of the bottom. The study is based on data collected at sea with an experimental front-scan sonar system (COSMOS -Project partially funded by the European Commission in the MAST III program -Contract n°MAS3-CT97-0090 -DG12 -ESCY). Data were recorded during a three day survey in the Mediterranean Sea in high variability sediment areas. The front-looking geometry of the COSMOS system enables the collection of the local angular responses of the bottom over a wide range of incidence angles. The angular responses are projected on a principal components basis and subsequently classified by means of a density-based cluster identification method. The resulting segmentation maps delineate properly homogeneous zones of the seafloor that are in agreement with the ground-truth information provided by samples collected at sea.

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Section: Introductionmentioning

confidence: 99%

Seafloor segmentation using angular backscatter responses obtained at sea with a forward-looking sonar system

et al. 2015

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“…For these reasons sounding data are processed into more ordered structures, such as grid (regular square network), that describes a digital terrain model (DTM) (Gaboardi et al 2011;Hamilton 1980;Maleika 2012Maleika , 2013Stateczny 2000). Grid structures are created through interpolation of measurement data (Gao 2001;Hammerstad et al 1993;Lubczonek and Stateczny 2003).…”

Section: Introductionmentioning

confidence: 99%

The influence of the grid resolution on the accuracy of the digital terrain model used in seabed modeling

Maleika

2014

Mar Geophys Res

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Modern digital terrain models (DTM) are widely used in the exploration of water areas. The models are often based on bathymetric data from a multibeam echosounder. DTM creators should properly select model parameters, firstly the grid resolution. High grid resolution enables creating very accurate models, however, they require high computing power and the data gathered in the grid occupy much more memory space. Low grid resolution means significantly less data describing the model, but, naturally, its accuracy will also be lower. The author proposes a method permitting to examine the accuracies of DTMs that depend on adopted grid resolution. Further the article will present search for an accurate grid resolution for three selected real surfaces of the seabed. The obtained results were visualized and interpreted. The author also proposes tips to be used while creating DTMs. Conclusions from the research may be helpful in digital terrain modeling of the seabed.

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Hydrographical survey using point cloud data from laser scanner and echo sounder

Prempraneerach

Janthong

Phothongkum

et al. 2016

2016 13th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technolo

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Advances in multibeam echo sounder technology

Cited by 10 publications

References 0 publications

Seafloor segmentation using angular backscatter responses obtained at sea with a forward-looking sonar system

Seafloor segmentation using angular backscatter responses obtained at sea with a forward-looking sonar system

The influence of the grid resolution on the accuracy of the digital terrain model used in seabed modeling

Hydrographical survey using point cloud data from laser scanner and echo sounder

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