Underwater positioning algorithm of seafloor datum point in great sailing circle mode

Shoulian Cao; Qianqian Li; Xian Yan

doi:10.1117/12.2668140

23 February 2023 Underwater positioning algorithm of seafloor datum point in great sailing circle mode

Shoulian Cao, Qianqian Li, Xian Yan

Proceedings Volume 12551, Fourth International Conference on Geoscience and Remote Sensing Mapping (GRSM 2022); 125510H (2023) https://doi.org/10.1117/12.2668140
Event: Fourth International Conference on Geoscience and Remote Sensing Mapping (GRSM 2022), 2022, Changchun, China

Abstract

The construction of marine space-time frame networks is an important part of ocean exploitation and utilization. Accurate measurement of the coordinates of seafloor datum points is the basis of the network. The temporal and spatial variation of sound speed in seawater will cause refraction of sound waves. Effectively eliminating the refraction effect of sound waves is crucial to improving the accuracy of underwater acoustic positioning. However, sound ray correction requires a trade-off between ranging accuracy and computational efficiency. In this paper, we proposed a method to improve the positioning accuracy of the equivalent sound speed profile method, and the simulation experiment results show that the algorithm can accurately calculate the coordinates of the seafloor datum point with high computational efficiency.

Citation Download Citation

Shoulian Cao, Qianqian Li, and Xian Yan "Underwater positioning algorithm of seafloor datum point in great sailing circle mode", Proc. SPIE 12551, Fourth International Conference on Geoscience and Remote Sensing Mapping (GRSM 2022), 125510H (23 February 2023); https://doi.org/10.1117/12.2668140

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