A method of multi-stage bathymetric profile analysis combined uncertainty and its application

被引:0
作者
Liu Z. [1 ,2 ,3 ]
Zhao D. [2 ,3 ]
Wu Z. [2 ,3 ]
Yang F. [1 ]
Wang M. [1 ,2 ,3 ]
Zhou J. [2 ,3 ]
机构
[1] College of Geomatics, Shandong University of Science and Technology, Qingdao
[2] Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou
[3] Key Laboratory of Submarine Geosciences, Ministry of Natural Resources, Hangzhou
来源
Cehui Xuebao/Acta Geodaetica et Cartographica Sinica | 2020年 / 49卷 / 03期
基金
中国国家自然科学基金;
关键词
Bathymetric profile; Hypothesis testing; Single-beam sounding; Topographic evolution; Uncertainty;
D O I
10.11947/j.AGCS.2020.20190188
中图分类号
学科分类号
摘要
Single-beam sounding technology is widely used in hydrographic survey in coastal and estuary areas. However, due to dynamic marine environment, it is difficult to obtain the depth at the same location in different periods, which makes it difficult to accurately compare and analyze the rapidly changing seabed topography. In order to solve this technical problem, this paper proposes a method of multi-stage bathymetric profile analysis combined uncertainty. Bathymetric profiles in different periods are constructed by steps including initial sounding uncertainty calculation, bathymetric and uncertainty transmission, Kalman filter, etc. Then, the profiles are compared and the topographic evolution is analyzed based on hypothesis testing. The method is verified by two-stage single-beam data measured in estuary area. The result shows that the method can obtain bathymetric profiles effectively comparison with actual profiles, and accurately evaluate topography with abrupt changes, which is of practical value for the analysis of rapidly changing subaqueous topography in estuaries, especially for navigational channels. © 2020, Surveying and Mapping Press. All right reserved.
引用
收藏
页码:386 / 395
页数:9
相关论文
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