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http://dx.doi.org/10.7848/ksgpc.2013.31.3.199

Calibration of Hydrographic Survey Multibeam System Using Terrestrial Laser Scanning and TS Surveying  

Kim, Jin Soo (ZEN21 Corporation)
Publication Information
Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography / v.31, no.3, 2013 , pp. 199-207 More about this Journal
Abstract
In hydrographic survey, data surveyed with multibeam system includes various errors due to multiple factors. These are corrected by a calibration called patch test, and if existing method is used, the test needs to be conducted for about 8 times for precise system calibration. For more prompt and precise multibeam system calibration, the exact offset of a ship was determined using terrestrial laser scanning and TS surveying, which was used as the initial input for the patch test. In the result, the error of closure was 0.001 m or less for TS surveying and backsight error was 0.005 m or less for scanning. All the surveying data based on the same local coordinate was converted into vessel reference coordinate during which R-square for all rotation angles was 0.99 or higher and standard deviation was 0.008 m or less. Finally, in a patch test using calculated offset of sensors and motion sensor offset, the offset of MBES transducer satisfied manual on hydrography only with 1-time calibration. With these results, it is thought that terrestrial laser scanning and TS surveying can fully be utilized for multibeam system calibration.
Keywords
Multibeam system; Terrestrial laser scanning; TS surveying; Offset; Patch test;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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