| Title |
Increasing Surveyed Area using Tilted Multi Beam Echo Sounder |
| Keywords |
multi beam echo sounder;hydrographic survey;tilting;underwater structure;멀티빔 음향측심기;수로측량;기울임;수중구조물 |
| Abstract |
The paper presents implementation & evaluation of survey method with tilted transducer of Multi Beam Echo Sounder (MBES) to increase horizontal & vertical coverage over obstructed port environments with limited physical properties of MBES. Proposed method (25˚ titled transducer) have some discrepancy of bathymetric profiles between normal and tilting method, but we proved average difference is less than IHO Special Order requirements with survey data at port of Dong Ho Port, Masan, Korea. For horizontal mapping coverage of total survey area (114,961㎡), normal method covered 53%, 60,895㎡ of total area but tilting method covered 75%, 85.933㎡. It is 22% efficient than normal method with similar environments.For vertical mapping coverage of total vertical structure face (7,421㎡), normal method covered 14%，1,046㎡, pro posed methods covered 60%, 4,450㎡. And we adapt longitudal steel bar to validate MBES results, and provide calibration method with titled transducer of MBES. |