Laboratory-based assessment of the Underwater Laser Scanner ULi
Optical measurement methods are widely used for precise and high-resolution underwater monitoring applications, however, remain limited in range as they are strongly affected by visibility. Through enhancements in laser technology, green LiDAR systems expand the range in the underwater domain under...
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| Language: | English |
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Copernicus Publications
2025-07-01
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| Series: | The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
| Online Access: | https://isprs-archives.copernicus.org/articles/XLVIII-2-W10-2025/123/2025/isprs-archives-XLVIII-2-W10-2025-123-2025.pdf |
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| author | E. Heffner A. L. Walter A. Scheider H. Sternberg |
| author_facet | E. Heffner A. L. Walter A. Scheider H. Sternberg |
| author_sort | E. Heffner |
| collection | DOAJ |
| description | Optical measurement methods are widely used for precise and high-resolution underwater monitoring applications, however, remain limited in range as they are strongly affected by visibility. Through enhancements in laser technology, green LiDAR systems expand the range in the underwater domain under favourable conditions. The Underwater LiDAR System (ULi), recently developed by the Fraunhofer Institute for Physical Measurement Techniques (IPM), is a Time-of-Flight (ToF) laser scanner optimized for underwater operation. This paper assesses the actual performance of ULi under varying environmental conditions in controlled laboratory setups. We present the results of static scans on different test objects like a Böhler-Star, spheres and metal plates at different distances and varying turbidity levels. Through repetitive range measurements on a metal plate range precision of ULi is evaluated to be 1.95 mm and ULi achieves a mean relative range accuracy of 6.01 mm. Additionally, we demonstrate that objects like small shells and water plants can be clearly identified in low turbid water. |
| format | Article |
| id | doaj-art-3167b8b1bf9e4589a5f8f306eae7fdc6 |
| institution | Kabale University |
| issn | 1682-1750 2194-9034 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
| spelling | doaj-art-3167b8b1bf9e4589a5f8f306eae7fdc62025-08-20T03:28:33ZengCopernicus PublicationsThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences1682-17502194-90342025-07-01XLVIII-2-W10-202512312910.5194/isprs-archives-XLVIII-2-W10-2025-123-2025Laboratory-based assessment of the Underwater Laser Scanner ULiE. Heffner0A. L. Walter1A. Scheider2H. Sternberg3Dept. of Hydrography and Geodesy, HafenCity University Hamburg, GermanyDept. of Hydrography and Geodesy, HafenCity University Hamburg, GermanyDept. of Hydrography and Geodesy, HafenCity University Hamburg, GermanyDept. of Hydrography and Geodesy, HafenCity University Hamburg, GermanyOptical measurement methods are widely used for precise and high-resolution underwater monitoring applications, however, remain limited in range as they are strongly affected by visibility. Through enhancements in laser technology, green LiDAR systems expand the range in the underwater domain under favourable conditions. The Underwater LiDAR System (ULi), recently developed by the Fraunhofer Institute for Physical Measurement Techniques (IPM), is a Time-of-Flight (ToF) laser scanner optimized for underwater operation. This paper assesses the actual performance of ULi under varying environmental conditions in controlled laboratory setups. We present the results of static scans on different test objects like a Böhler-Star, spheres and metal plates at different distances and varying turbidity levels. Through repetitive range measurements on a metal plate range precision of ULi is evaluated to be 1.95 mm and ULi achieves a mean relative range accuracy of 6.01 mm. Additionally, we demonstrate that objects like small shells and water plants can be clearly identified in low turbid water.https://isprs-archives.copernicus.org/articles/XLVIII-2-W10-2025/123/2025/isprs-archives-XLVIII-2-W10-2025-123-2025.pdf |
| spellingShingle | E. Heffner A. L. Walter A. Scheider H. Sternberg Laboratory-based assessment of the Underwater Laser Scanner ULi The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences |
| title | Laboratory-based assessment of the Underwater Laser Scanner ULi |
| title_full | Laboratory-based assessment of the Underwater Laser Scanner ULi |
| title_fullStr | Laboratory-based assessment of the Underwater Laser Scanner ULi |
| title_full_unstemmed | Laboratory-based assessment of the Underwater Laser Scanner ULi |
| title_short | Laboratory-based assessment of the Underwater Laser Scanner ULi |
| title_sort | laboratory based assessment of the underwater laser scanner uli |
| url | https://isprs-archives.copernicus.org/articles/XLVIII-2-W10-2025/123/2025/isprs-archives-XLVIII-2-W10-2025-123-2025.pdf |
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