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A Modification of the Approach to the Evaluation of Collision Risk Using Sech Function
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 Title & Authors
A Modification of the Approach to the Evaluation of Collision Risk Using Sech Function
Jeong, Tae-Gwoen; Chao, Chen;
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 Abstract
Evaluation of collision risk plays a key role in developing the expert system of navigation and collision avoidance. This paper presents a new collision risk model formula that is one modification model on the basis of one approach to the evaluation of collision risk using sech function produced in earlier studies. And as a tool of the evaluation field of ship collision, this paper applied the new model in appraising the collision risk and represented how to decide the safe range of own ship's action. Moreover this paper also analyzed theoretically how to determine the coefficients as described in the new modification model, and suggested the appropriate values as applicable.
 Keywords
Collision risk;Sech function;Distance of closest point of approach;Approach time;Before-action;After-action;
 Language
English
 Cited by
1.
A Study on Development of Expert System for Collision Avoidance and Navigation(I): Basic Design,;;

한국항해항만학회지, 2008. vol.32. 7, pp.529-535 crossref(new window)
 References
1.
Imazu, H.(1984), 'Avoidance and Prevention Collision System', Seisando Bookstore, pp.0-101

2.
Jeong, T. G.(2003a), 'A New Approach to the Evaluation of Collision Risk using sech Function', Journal of Korean Navigation and Port Research, Vol.27, No.2 pp. 103-109 crossref(new window)

3.
Jeong, T. G.(2003b), 'A Study on Determination of Gradient Coefficients in the New Evaluation of Collision Risk', Journal of Korean Navigation and Port Research, Vol. 27, No.3, pp .351 - 357 crossref(new window)

4.
Jeong, T. G.(2003c), 'A Study on the Threshold of Avoidance Time in the New Evaluation of Collision Risk', Journal of Korean Navigation and Port Research, Vol.27, No.6, pp.619-624 crossref(new window)

5.
Jeong, T. G.(2004), 'A Study on the Threshold of Avoidance Sector in the New Evaluation of Collision Risk', Journal of Korean Navigation and Port Research, Vol.28, No.9, pp.799-802 crossref(new window)