A Wide-Area Deep Ocean Floor Mapping System: Design and Sea Tests
Mapping the seafloor in the deep ocean is currently performed using sonar systems on surface vessels (low-resolution maps) or undersea vessels (high-resolution maps). Surface-based mapping can cover a much wider search area and is not burdened by the complex logistics required for deploying undersea...
| Main Authors: | , , , , , , , |
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| Format: | Article |
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Multidisciplinary Digital Publishing Institute
2023
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| Online Access: | https://hdl.handle.net/1721.1/148836 |
| _version_ | 1811071514067337216 |
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| author | Ryu, Paul Brown, David Arsenault, Kevin Cho, Byunggu March, Andrew Ali, Wael H. Charous, Aaron Lermusiaux, Pierre F. J. |
| author2 | Lincoln Laboratory |
| author_facet | Lincoln Laboratory Ryu, Paul Brown, David Arsenault, Kevin Cho, Byunggu March, Andrew Ali, Wael H. Charous, Aaron Lermusiaux, Pierre F. J. |
| author_sort | Ryu, Paul |
| collection | MIT |
| description | Mapping the seafloor in the deep ocean is currently performed using sonar systems on surface vessels (low-resolution maps) or undersea vessels (high-resolution maps). Surface-based mapping can cover a much wider search area and is not burdened by the complex logistics required for deploying undersea vessels. However, practical size constraints for a towbody or hull-mounted sonar array result in limits in beamforming and imaging resolution. For cost-effective high-resolution mapping of the deep ocean floor from the surface, a mobile wide-aperture sparse array with subarrays distributed across multiple autonomous surface vessels (ASVs) has been designed. Such a system could enable a surface-based sensor to cover a wide area while achieving high-resolution bathymetry, with resolution cells on the order of 1 m<sup>2</sup> at a 6 km depth. For coherent 3D imaging, such a system must dynamically track the precise relative position of each boat’s sonar subarray through ocean-induced motions, estimate water column and bottom reflection properties, and mitigate interference from the array sidelobes. Sea testing of this core sparse acoustic array technology has been conducted, and planning is underway for relative navigation testing with ASVs capable of hosting an acoustic subarray. |
| first_indexed | 2024-09-23T08:52:23Z |
| format | Article |
| id | mit-1721.1/148836 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T08:52:23Z |
| publishDate | 2023 |
| publisher | Multidisciplinary Digital Publishing Institute |
| record_format | dspace |
| spelling | mit-1721.1/1488362024-01-19T21:28:25Z A Wide-Area Deep Ocean Floor Mapping System: Design and Sea Tests Ryu, Paul Brown, David Arsenault, Kevin Cho, Byunggu March, Andrew Ali, Wael H. Charous, Aaron Lermusiaux, Pierre F. J. Lincoln Laboratory Massachusetts Institute of Technology. Department of Mechanical Engineering Massachusetts Institute of Technology. Center for Computational Science and Engineering Mapping the seafloor in the deep ocean is currently performed using sonar systems on surface vessels (low-resolution maps) or undersea vessels (high-resolution maps). Surface-based mapping can cover a much wider search area and is not burdened by the complex logistics required for deploying undersea vessels. However, practical size constraints for a towbody or hull-mounted sonar array result in limits in beamforming and imaging resolution. For cost-effective high-resolution mapping of the deep ocean floor from the surface, a mobile wide-aperture sparse array with subarrays distributed across multiple autonomous surface vessels (ASVs) has been designed. Such a system could enable a surface-based sensor to cover a wide area while achieving high-resolution bathymetry, with resolution cells on the order of 1 m<sup>2</sup> at a 6 km depth. For coherent 3D imaging, such a system must dynamically track the precise relative position of each boat’s sonar subarray through ocean-induced motions, estimate water column and bottom reflection properties, and mitigate interference from the array sidelobes. Sea testing of this core sparse acoustic array technology has been conducted, and planning is underway for relative navigation testing with ASVs capable of hosting an acoustic subarray. 2023-03-28T20:55:31Z 2023-03-28T20:55:31Z 2023-03-22 2023-03-28T12:55:54Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/148836 Geomatics 3 (1): 290-311 (2023) PUBLISHER_CC http://dx.doi.org/10.3390/geomatics3010016 Creative Commons Attribution http://creativecommons.org/licenses/by/4.0/ application/pdf Multidisciplinary Digital Publishing Institute Multidisciplinary Digital Publishing Institute |
| spellingShingle | Ryu, Paul Brown, David Arsenault, Kevin Cho, Byunggu March, Andrew Ali, Wael H. Charous, Aaron Lermusiaux, Pierre F. J. A Wide-Area Deep Ocean Floor Mapping System: Design and Sea Tests |
| title | A Wide-Area Deep Ocean Floor Mapping System: Design and Sea Tests |
| title_full | A Wide-Area Deep Ocean Floor Mapping System: Design and Sea Tests |
| title_fullStr | A Wide-Area Deep Ocean Floor Mapping System: Design and Sea Tests |
| title_full_unstemmed | A Wide-Area Deep Ocean Floor Mapping System: Design and Sea Tests |
| title_short | A Wide-Area Deep Ocean Floor Mapping System: Design and Sea Tests |
| title_sort | wide area deep ocean floor mapping system design and sea tests |
| url | https://hdl.handle.net/1721.1/148836 |
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