Wielgosz Miroslaw, Pietrzykowski Zbigniew
Faculty of Navigation, Maritime University of Szczecin, Szczecin, Poland.
Faculty of Computer Science and Telecommunications, Maritime University of Szczecin, Szczecin, Poland.
PLoS One. 2022 Apr 26;17(4):e0265681. doi: 10.1371/journal.pone.0265681. eCollection 2022.
Decision support and decision making systems find increasingly more applications in various modes of transport. In this connection, criteria of movement safety assessment must be established for manned, unmanned, and autonomous vehicles, bearing in mind the specifics of each transport mode. Distance is one of the basic criteria. In sea transport these include the closest point of approach and ship's domain understood as an area that should remain free of other objects. The authors examine the relationship between the declared domain and the actually maintained effective domain in a restricted area. They define the coefficient describing this relationship for different ship's relative bearings in the form of a mathematical function. The formulated relationship allows determining an effective passing distance based on the declared, i.e., assumed passing distance. The determined relationship also enables identification of the declarative domain based on the effective one. These relationships may be used in decision support systems of manned ships, in remote ship control centres and decision-making systems of autonomous ships for the assessment of ship movement safety, planning collision avoidance manoeuvres and generation of safe trajectories.
决策支持和决策系统在各种运输方式中的应用越来越多。在这方面，必须针对载人、无人和自动驾驶车辆制定运动安全评估标准，同时要考虑到每种运输方式的特点。距离是基本标准之一。在海上运输中，这些标准包括最近会遇点以及被理解为应保持无其他物体的区域的船舶领域。作者研究了在受限区域内声明的领域与实际维持的有效领域之间的关系。他们以数学函数的形式定义了描述不同船舶相对方位这种关系的系数。所阐述的关系允许根据声明的，即假定的会遇距离来确定有效通过距离。所确定的关系还能够基于有效领域识别声明领域。这些关系可用于载人船舶的决策支持系统、远程船舶控制中心以及自动驾驶船舶的决策系统，以评估船舶运动安全性、规划避碰操纵以及生成安全轨迹。
