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Publications
Yuan, X.L., Zhang, D., Zhang, J.F., Zhang, M.Y. and Guedes Soares, C. (2021), “A novel real-time collision risk awareness method based on velocity obstacle considering uncertainties in ship dynamics”, Ocean Engineering, Vol. 220, 108436 (20 pages)
COLREGs-based collision risk awareness model is urgently needed in real time operation conditions, but, this is a complicated problem because ships meet various encounter situations, some of which very complex. In order to quantify the collision risk in real operating conditions, a novel risk-informed collision risk awareness approach is proposed for real-time operating conditions. It mainly consists of four models or stages. Firstly, the ship motions are identified using turning points based on Automatic Identification System (AIS) data. Secondly, the uncertainty of ship motion patterns is analyzed by regarding the target ships as velocity obstacles. Then, the collision risk model is utilized to assess the collision risk level in different areas based on the uncertainty in the non-linear velocity obstacles algorithm. Finally, some case studies are carried out based on the proposed model. In the model, the dynamic and uncertainty characteristics of the ship motion patterns in real operating conditions are considered, which could benefit on reducing the ship collision accidents and improving the development of technologies on intelligent collision avoidance decision makings.
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