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A novel approach of collision assessment for coastal radar surveillance

Ma, F, Chen, Y-W, Huang, Z-C, Yan, X-P and Wang, J (2016) A novel approach of collision assessment for coastal radar surveillance. RELIABILITY ENGINEERING & SYSTEM SAFETY, 155. pp. 179-195. ISSN 0951-8320

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For coastal radar surveillance, this paper proposes a data-driven approach to estimate a blip’s collision probability preliminarily based on two factors: the probability of it being a moving vessel and the collision potential of its position. The first factor can be determined by a Directed Acyclic Graph (DAG), whose nodes represent the blip’s characteristics, including the velocity, direction and size. Additionally, the structure and conditional probability tables of the DAG can be learned from verified samples. Subsequently, the obstacles in a waterway can be described as collision potential fields using an Artificial Potential Field model, and the corresponding coefficients can be trained in accordance with the historical vessel distribution. Then, the other factor, the positional collision potential of any position is obtained through overlapping all the collision potential fields. For simplicity, moving speeds of obstacles are considered in this research. Eventually, the two factors are characterised as two pieces of evidence, and the collision probability of a blip is estimated by combining them with Dempster’s rule. Through ranking blips on collision probabilities, those that pose high threat to safety can be picked up in advance to remind supervisors. Particularly, a good agreement between the proposed approach and the manual work was found in a preliminary test.

Item Type: Article
Uncontrolled Keywords: 09 Engineering, 15 Commerce, Management, Tourism And Services, 01 Mathematical Sciences
Subjects: T Technology > T Technology (General)
Divisions: Maritime & Mechanical Engineering (merged with Engineering 10 Aug 20)
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Date Deposited: 06 Oct 2016 09:52
Last Modified: 04 Sep 2021 12:26
DOI or ID number: 10.1016/j.ress.2016.07.013
URI: https://researchonline.ljmu.ac.uk/id/eprint/4260
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