Abstract
With the development of ultra-wide coverage technology, multibeam echo-sounder (MBES) system has put forward higher requirements for localization accuracy and computational efficiency of ray tracing method. The classical equivalent sound speed profile (ESSP) method replaces the measured sound velocity profile (SVP) with a simple constant gradient SVP, reducing the computational workload of beam positioning. However, in deep-sea environment, the depth measurement error of this method rapidly increases from the central beam to the edge beam. By analyzing the positioning error of the ESSP method at edge beam, it is discovered that the positioning error increases monotonically with the incident angle, and the relationship between them could be expressed by polynomial function. Therefore, an error correction algorithm based on polynomial fitting is obtained. The simulation experiment conducted on an inclined seafloor shows that the proposed algorithm exhibits comparable efficiency to the original ESSP method, while significantly improving bathymetry accuracy by nearly eight times in the edge beam.
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References
Červený V, Popov M M, Pšenčík I. 1982. Computation of wave fields in inhomogeneous media - Gaussian beam approach. Geophysical Journal International, 70(1): 109–128, doi: https://doi.org/10.1111/j.1365-246X.1982.tb06394.x
Chen Yilan, Ding Jisheng, Zhang Haiquan, et al. 2019. Multibeam water column data research in the Taixinan Basin: Implications for the potential occurrence of natural gas hydrate. Acta Oceanologica Sinica, 38(5): 129–133, doi: https://doi.org/10.1007/s13131-019-1444-0
de Moustier C. 1986. Beyond bathymetry: Mapping acoustic backs-cattering from the deep seafloor with Sea Beam. The Journal of the Acoustical Society of America, 79(2): 316–331, doi: https://doi.org/10.1121/1.393570
Farr H K. 1980. Multibeam bathymetric sonar: sea beam and hydro chart. Marine Geodesy, 4(2): 77–93, doi: https://doi.org/10.1080/15210608009379375
Geng Xueyi, Zielinski A. 1999. Precise multibeam acoustic bathymetry. Marine Geodesy, 22(3): 157–167, doi: https://doi.org/10.1080/014904199273434
International Hydrographic Organization. 2008. Special Publication 44. IHO Standards for Hydrographic Surveys. 5th ed. Monaco: International Hydrographic Bureau, 14–16.
Jia Yuqing, Su Lin, Mo Yaxiao, et al. 2019. A method of constructing equivalent sound speed profile in complex shallow water. Journal of Applied Acoustics (in Chinese), 38(4): 623–634, doi: https://doi.org/10.11684/j.issn.1000-310X.2019.04.020
Lamarche G, Lurton X, Verdier A L. 2011. Quantitative characterisation of seafloor substrate and bedforms using advanced processing of multibeam backscatter—Application to Cook Strait, New Zealand. Continental Shelf Research, 31(S2): S93–S109, doi: https://doi.org/10.1016/j.csr.2010.06.001
Li Qianqian, Shi Juan, Li Zhenglin, et al. 2019. Acoustic sound speed profile inversion based on orthogonal matching pursuit. Acta Oceanologica Sinica, 38(11): 149–157, doi: https://doi.org/10.1007/s13131-019-1505-4
Porter M B, Bucker H P. 1987. Gaussian beam tracing for computing ocean acoustic fields. The Journal of the Acoustical Society of America, 82(4): 1349–1359, doi: https://doi.org/10.1121/1.395269
Teledyne Reson. 2022. SeaBat T50-P product leaflet. https://www.teledynemarine.com/en-us/products/SiteAssets/RESON/SeaBat%20T50-P%20product%20leaflet.pdf[2022-12-22]
Wu Ziyin, Yang Fanlin, Tang Yong. 2021. Multi-beam bathymetric technology. In: Wu Ziyin, Yang Fanlin, Tang Yong, eds. High-resolution Seafloor Survey and Applications. Singapore: Springer, 21–76, doi: https://doi.org/10.1007/978-981-15-9750-3_2
Xin Mingzhen, Yang Fanlin, Wang Faxing, et al. 2018. A TOA/AOA underwater acoustic positioning system based on the equivalent sound speed. The Journal of Navigation, 71(6): 1431–1440, doi: https://doi.org/10.1017/S037346331800036X
Zhang Kai, Li Qianqian, Zhu Hongchun, et al. 2020. Acoustic deep-sea seafloor characterization accounting for heterogeneity effect. IEEE Transactions on Geoscience and Remote Sensing, 58(5): 3034–3042, doi: https://doi.org/10.1109/TGRS.2019.2946986
Zhao Jianhu, Liu Jingnan. 2008. Multi-Beam Sounding and Image Data Processing (in Chinese). Wuhan: Wuhan University Press, 124–142
Zhao Dineng, Wu Ziyin, Zhou Jieqiong, et al. 2021. From 10 m to 11000 m, automatic processing multi-beam bathymetric data based on PGO method. IEEE Access, 9: 14516–14527, doi: https://doi.org/10.1109/ACCESS.2021.3051909
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Foundation item: The Natural Science Foundation of Shandong Province of China under contract Nos ZR2022MA051 and ZR2020MA090; the National Natural Science Foundation of China under contract No. U22A2012; China Postdoctoral Science Foundation under contract No. 2020M670891; the SDUST Research Fund under contract No. 2019TDJH103; the Talent Introduction Plan for Youth Innovation Team in universities of Shandong Province (innovation team of satellite positioning and navigation).
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Li, Q., Tong, Q., Yang, F. et al. An improved algorithm based on equivalent sound velocity profile method at large incident angle. Acta Oceanol. Sin. 43, 161–167 (2024). https://doi.org/10.1007/s13131-023-2261-z
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DOI: https://doi.org/10.1007/s13131-023-2261-z