Supplementary file 1_Multispectral backscatter-based characterization of seafloor sediments using calibrated multibeam and tilted single-beam echosounders.pdf
Saved in:
| Title: | Supplementary file 1_Multispectral backscatter-based characterization of seafloor sediments using calibrated multibeam and tilted single-beam echosounders.pdf |
|---|---|
| Authors: | Ridha Fezzani, Laurent Berger, Naig Le Bouffant, Xavier Lurton |
| Publication Year: | 2025 |
| Subject Terms: | Photogrammetry and Remote Sensing, multibeam, multispectral, calibration, single-beam, angular response curves, backscatter |
| 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. |
| Document Type: | dataset |
| Language: | unknown |
| DOI: | 10.3389/frsen.2025.1574996.s001 |
| Availability: | https://doi.org/10.3389/frsen.2025.1574996.s001 https://figshare.com/articles/dataset/Supplementary_file_1_Multispectral_backscatter-based_characterization_of_seafloor_sediments_using_calibrated_multibeam_and_tilted_single-beam_echosounders_pdf/29476070 |
| Rights: | CC BY 4.0 |
| Accession Number: | edsbas.15DF4181 |
| Database: | BASE |
Nájsť tento článok vo Web of Science | Abstract: | 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. |
|---|---|
| DOI: | 10.3389/frsen.2025.1574996.s001 |