Facial reconstruction

Search LJMU Research Online

Browse Repository | Browse E-Theses

A novel approach of collision assessment for coastal radar surveillance

Ma, F and Chen, Y-W and Huang, Z-C and 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

[img] Text
Published manuscript.pdf - Accepted Version
Restricted to Repository staff only until 15 July 2018.
Available under License Creative Commons Attribution Non-commercial No Derivatives.

Download (1MB)

Abstract

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 and Mechanical Engineering
Publisher: ELSEVIER SCI LTD
Related URLs:
Date Deposited: 06 Oct 2016 09:52
Last Modified: 18 Nov 2016 11:53
DOI or Identification number: 10.1016/j.ress.2016.07.013
URI: http://researchonline.ljmu.ac.uk/id/eprint/4260

Actions (login required)

View Item View Item