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A Time/Effort Comparison of Automatic and Manual Bathymetric Processing in Real-Time Mode

By Brian Calder and Shep Smith


In September 2002, the NOAA Ship RAINIER hosted an experiment to examine the benefit in processing time from adopting CUBE [Calder & Mayer, 2002] and the Navigation Surface [Smith et al., 2002], and to determine whether this methodology could be used in real-time. Using normal survey methodology, data were collected from multiple platforms in Valdez Narrows, AK (~10x10km, 0-300m depth, slope 40-60°). Seven boat-days of data were collected, containing 22.3×10 6 raw soundings. We obtained a copy of the ship’s data after correctors were applied, but before any handedits had been done, and then ran the data through CUBE where multibeam data was available, using a TINing algorithm to junction singlebeam, shoreline and other features. Next, we inspected the data using GeoZui3D for visualization and CARIS HIPS for remediation. A final pass through CUBE resulted in an updated ‘current survey estimate ’ to proceed to the next day; after all data were collected, a final sweep through the data completed the editing process. Throughout the process, the ship’s survey team recorded time expended on the project, broken into interactive and non-interactive tasks, with finer sub-divisions such as data manipulation time and line-oriented (swath) editing, etc. Since the CUBE effort concentrates on data processing, we recorded only this category

Year: 2009
OAI identifier: oai:CiteSeerX.psu:
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