The advent of multibeam bathymetry systems, which are capable of total seafloor ensonication, have made fundamental changes in hydrography. The new International Hydrographic Office (IHO) S-44 standards challenge hydrographers to achieve even greater depth and position accuracy with multibeam systems. The National Research Laboratory's (NRL) multibeam sensor enhancements on Oceanographic Remotely Controlled Automaton (ORCA) include improved positioning of soundings, reduction in the sum of depth errors, and better survey coverage efficiency. Evolutionary improvements in sensors and survey techniques are narrowing the accuracy gap between multibeam hydrographic surveys and land-mapping surveys.
NRL's improved multibeam system on ORCA
Sea Technology ; 40 , 3 ; 85-88
1999
4 Seiten, 3 Quellen
Article (Journal)
English
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