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- W4310121869 abstract "Mooring is a widely used stationkeeping approach for floating structures. The main contribution of this paper is to propose a novel localization scheme, which provides additional real-time position references and estimates the unknown anchor positions to a moored structure simultaneously using tension measurements from the mooring monitoring system. The proposed method enhances the safety of moored floating structures by extracting redundant position information from tension measurements instead of using satellite signals. A line-of-sight model that transforms tension measurements into range signals is developed. Fairleads, turret dynamics, and slow-varying current profiles are considered to provide a more realistic and robust tension-based localization scheme than early research. A distance-only sensor network is constructed, and graph rigidity theory is applied to analyze its topological observability. Two simplified models are presented for some specific applications: (1) to find the broken anchors offline with stored data for any vessels equipped with tension cells and (2) to position the moored structures with known anchor positions. Sensitivity studies show that the influence of unknown surface current is small, while the effects of unknown current profiles are larger. The positioning accuracy can be improved by increasing the number of virtual vessels." @default.
- W4310121869 created "2022-11-30" @default.
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- W4310121869 date "2022-12-01" @default.
- W4310121869 modified "2023-09-27" @default.
- W4310121869 title "Localization and topological observability analysis of a moored floating structure using mooring line tension measurements" @default.
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- W4310121869 doi "https://doi.org/10.1016/j.oceaneng.2022.112706" @default.
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