Multispectral backscatter-based characterization of seafloor sediments using calibrated multibeam and tilted single-beam echosounders
This study presents a detailed analysis of Angular Response Curves (ARC) extracted from a multi-spectral seabed backscatter dataset utilizing both calibrated single-beam (SBES) and multibeam echosounders (MBES). Five calibrated SBES transducers were tilted from −9° to 70° to measure ARC at different...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2025-07-01
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| Series: | Frontiers in Remote Sensing |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/frsen.2025.1574996/full |
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| author | Ridha Fezzani Laurent Berger Naig Le Bouffant Xavier Lurton |
| author_facet | Ridha Fezzani Laurent Berger Naig Le Bouffant Xavier Lurton |
| author_sort | Ridha Fezzani |
| collection | DOAJ |
| description | This study presents a detailed analysis of Angular Response Curves (ARC) extracted from a multi-spectral seabed backscatter dataset utilizing both calibrated single-beam (SBES) and multibeam echosounders (MBES). Five calibrated SBES transducers were tilted from −9° to 70° to measure ARC at different discrete frequencies ranges from 35 kHz to 440 kHz (three to four frequencies per transducer). Additionally, three frequencies −200 kHz, 300 kHz and 400 kHz - were used with the MBES. Experimental data were collected in the Bay of Concarneau, located on the French Northwest coast, across seven different ground-truthed sediment types. The study aims to investigate the effects of frequency and pulse length on ARC shape and intensity. Furthermore, a novel method for estimating seabed angular backscatter from standard SBES volume backscatter strength (Sv) is used. A key aspect of this research is the intercalibration of the multibeam and singlebeam systems to ensure consistency and reliability in MBES backscatter measurements. These findings contribute to a better understanding of acoustic wave interactions with sediment properties across different wavelengths and pulse durations, ultimately improving seabed characterization accuracy. |
| format | Article |
| id | doaj-art-e72e1ca54acf42bfaf4a624653f196bf |
| institution | Kabale University |
| issn | 2673-6187 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Remote Sensing |
| spelling | doaj-art-e72e1ca54acf42bfaf4a624653f196bf2025-08-20T03:29:31ZengFrontiers Media S.A.Frontiers in Remote Sensing2673-61872025-07-01610.3389/frsen.2025.15749961574996Multispectral backscatter-based characterization of seafloor sediments using calibrated multibeam and tilted single-beam echosoundersRidha Fezzani0Laurent Berger1Naig Le Bouffant2Xavier Lurton3Underwater Acoustics Laboratory,French national institute for ocean science and technology (IFREMER), Plouzané, FranceUnderwater Acoustics Laboratory,French national institute for ocean science and technology (IFREMER), Plouzané, FranceUnderwater Acoustics Laboratory,French national institute for ocean science and technology (IFREMER), Plouzané, FranceIndependent Researcher, Locmaria-Plouzane, FranceThis study presents a detailed analysis of Angular Response Curves (ARC) extracted from a multi-spectral seabed backscatter dataset utilizing both calibrated single-beam (SBES) and multibeam echosounders (MBES). Five calibrated SBES transducers were tilted from −9° to 70° to measure ARC at different discrete frequencies ranges from 35 kHz to 440 kHz (three to four frequencies per transducer). Additionally, three frequencies −200 kHz, 300 kHz and 400 kHz - were used with the MBES. Experimental data were collected in the Bay of Concarneau, located on the French Northwest coast, across seven different ground-truthed sediment types. The study aims to investigate the effects of frequency and pulse length on ARC shape and intensity. Furthermore, a novel method for estimating seabed angular backscatter from standard SBES volume backscatter strength (Sv) is used. A key aspect of this research is the intercalibration of the multibeam and singlebeam systems to ensure consistency and reliability in MBES backscatter measurements. These findings contribute to a better understanding of acoustic wave interactions with sediment properties across different wavelengths and pulse durations, ultimately improving seabed characterization accuracy.https://www.frontiersin.org/articles/10.3389/frsen.2025.1574996/fullmultibeammultispectralcalibrationsingle-beamangular response curvesbackscatter |
| spellingShingle | Ridha Fezzani Laurent Berger Naig Le Bouffant Xavier Lurton Multispectral backscatter-based characterization of seafloor sediments using calibrated multibeam and tilted single-beam echosounders Frontiers in Remote Sensing multibeam multispectral calibration single-beam angular response curves backscatter |
| title | Multispectral backscatter-based characterization of seafloor sediments using calibrated multibeam and tilted single-beam echosounders |
| title_full | Multispectral backscatter-based characterization of seafloor sediments using calibrated multibeam and tilted single-beam echosounders |
| title_fullStr | Multispectral backscatter-based characterization of seafloor sediments using calibrated multibeam and tilted single-beam echosounders |
| title_full_unstemmed | Multispectral backscatter-based characterization of seafloor sediments using calibrated multibeam and tilted single-beam echosounders |
| title_short | Multispectral backscatter-based characterization of seafloor sediments using calibrated multibeam and tilted single-beam echosounders |
| title_sort | multispectral backscatter based characterization of seafloor sediments using calibrated multibeam and tilted single beam echosounders |
| topic | multibeam multispectral calibration single-beam angular response curves backscatter |
| url | https://www.frontiersin.org/articles/10.3389/frsen.2025.1574996/full |
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