Journal ArticleDOI
A New Method of Planning Collision Avoidance Manoeuvres for Multi-Target Encounter Situations
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A new method of collision avoidance for multi-target encounters, which combines the qualities of a sequence of necessary manoeuvres with some optimisation elements and supports any given ship domain.Abstract:
In this paper the author introduces a new method of collision avoidance for multi-target encounters. The method combines the qualities of a sequence of necessary manoeuvres with some optimisation elements and supports any given ship domain. First the problem of determining the optimal course alteration manoeuvre for given ship domain model and multi-target encounter situation is solved. The solution consists of analytical formulas and numerical algorithms combined to achieve low computational complexity. Then this solution is further used to construct a method of planning ship trajectories, which are safe, economic and intuitive for navigators. Example scenarios and the resulting trajectories are also provided. All of the algorithms, formulas and their derivations in the text are presented explicitly, so that they could be directly applied in any collision avoidance system.read more
Citations
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Journal ArticleDOI
An Intelligent Spatial Collision Risk Based on the Quaternion Ship Domain
TL;DR: Simulation results demonstrate that the proposed quaternion ship domain (QSD) is more effective and more flexible than other ship domains, and that the intelligent SCR based on the FQSD are reasonable and dependable.
Journal ArticleDOI
A Novel Analytical Framework for Dynamic Quaternion Ship Domains
TL;DR: In this article, a novel analytical framework for Dynamic Quaternion Ship Domain (DQSD) models has been initially proposed via the QSDD model structure, which is integrated by three independent submodels of ship, human and circumstance, which are determined by ship manoeuvrability, navigator's states, and navigation circumstance.
Journal ArticleDOI
Evolutionary Sets Of Safe Ship Trajectories: A New Approach To Collision Avoidance
TL;DR: In this paper, the evolutionary sets of safe trajectories (ESDP) approach is used to solve multi-ship encounter situations for both open waters and restricted water regions, combining some of the assumptions of game theory with evolutionary programming and aims to find optimal sets of safety trajectories of all ships involved in an encounter situation.
Journal ArticleDOI
Review and analysis of methods for assessing maritime waterway risk based on non-accident critical events detected from AIS data
TL;DR: Focus is needed to build evidence of the validity of the models’ results, if these are to be effectively used for waterway risk analysis, and more focus is needed on how exactly non-accident critical events are defined, and what factors are involved in the relation between their occurrence and accident involvement.
Journal ArticleDOI
On evolutionary computing in multi-ship trajectory planning
TL;DR: The paper presents the updated version of Evolutionary Sets of Safe Ship Trajectories: a method which applies evolutionary algorithms and some of the assumptions of game theory to solving ship encounter situations and accentuates the research on improving the optimization process by adjusting evolutionary mechanisms to the problem.
References
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Journal ArticleDOI
Marine Traffic Behaviour in Restricted Waters
TL;DR: In this paper, the authors present the development and analysis of the ship domain in restricted waters and illustrate some of its uses in a buoyed channel, where the analysis of marine casualties raises the question of how casualties occur and may indicate the circumstances most likely to lead to a casualty.
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A Unified Measure Of Collision Risk Derived From The Concept Of A Ship Domain
TL;DR: In this paper, a new measure of collision risk derived from the concept of a ship domain is presented, which is a good alternative to the commonly used term of the distance at the closest point of approach (DCPA).
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A Computer Simulation of Multi-Ship Encounters
TL;DR: In this paper, a model for the simulation of the behaviour of more than two ships, the entrance to harbours, and narrow channels was presented, which obeyed the Collision Regulations.
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Collision Threat Parameters for a new Radar Display and Plot Technique
TL;DR: In this paper, a new approach to the display of collision threat parameter areas, obtained as a result of theoretical considerations, is discussed, which can be applied to radar-computer anti-collision systems as well as manual radar plots.