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Processing and filtering of multibeam data: grid modelling versus tin based modelling
De Wulf, A.; Hennau, M.; Constales, D. (2006). Processing and filtering of multibeam data: grid modelling versus tin based modelling, in: Evolutions in hydrography, 6th - 9th November 2006, Provincial House Antwerp, Belgium: Proceedings of the 15th International Congress of the International Federation of Hydrographic Societies. Special Publication (Hydrographic Society), 55: pp. 75-79
In: (2006). Evolutions in hydrography, 6th - 9th November 2006, Provincial House Antwerp, Belgium: Proceedings of the 15th International Congress of the International Federation of Hydrographic Societies. Special Publication of the Hydrographic Society, 55. International Federation of Hydrographic Society: London. 234 + cd-rom pp., more
In: Special Publication (Hydrographic Society). Hydrographic Society: London. ISSN 0309-8303, more

Available in  Authors 
Document type: Conference paper

Keywords
    Bathymetric data; Echosounding; Hydrography; Mathematical models; Modelling; Multibeam sonar; Seafloor mapping; Marine

Authors  Top 
  • De Wulf, A., more
  • Hennau, M., more
  • Constales, D.

Abstract
    Multibeam echosounder measurements serve to make a digital terrain model (DTM) of the seafloor. The Delaunay triangulation is a widely appreciated and investigated mathematical model to represent the relief of such a terrain and is highly efficient for building triangular irregular networks out of non-homogeneous data such as raw multibeam data. However, most multibeam systems deliver equidistant interpolated data, allowing faster processing to be achieved by using equidistant grid modelling. Both approaches yield their own advantages and drawbacks. More specifically, the filtering options of TIN and grid models are quite different. An analysis of both workflows will be worked out.

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