TY - JOUR
T1 - A rule-aware time-varying conflict risk measure for MASS considering maritime practice
AU - Li, Mengxia
AU - Mou, Junmin
AU - Chen, Linying
AU - He, Yixiong
AU - Huang, Yamin
PY - 2021
Y1 - 2021
N2 - Conflict detection is a vital step of collision prevention at sea, determining if there is a risk of collision and when to take preventing actions. This article proposes a practical Rule-aware Time-varying Conflict Risk (R-TCR) for ship collision avoidance. Considering maritime practice, the conflict risk measure takes the ship maneuverability, the COLREGs, and good seamanship into account in the conflict risk measure. Specifically, the conflict risk is formulated as a ratio of achievable maneuvers leading to a collision to all achievable maneuvers. Simulations are carried out to show the characteristics of R-TCR. The results show that the R-TCR evaluates the entire conflict risk incorporating COLREG rules, multiple targets, different maneuverability, and varying ship domains. Finally, the proposed measure is applied to analyze the collision accident between two ships. Compared with the conventional risk indicators, the proposed R-TCR can deliver extra information to users, such as providing early warning, showing the room-for-maneuver, and suggesting evasive actions. Besides, the extra information also supports collision avoidance for autonomous ships.
AB - Conflict detection is a vital step of collision prevention at sea, determining if there is a risk of collision and when to take preventing actions. This article proposes a practical Rule-aware Time-varying Conflict Risk (R-TCR) for ship collision avoidance. Considering maritime practice, the conflict risk measure takes the ship maneuverability, the COLREGs, and good seamanship into account in the conflict risk measure. Specifically, the conflict risk is formulated as a ratio of achievable maneuvers leading to a collision to all achievable maneuvers. Simulations are carried out to show the characteristics of R-TCR. The results show that the R-TCR evaluates the entire conflict risk incorporating COLREG rules, multiple targets, different maneuverability, and varying ship domains. Finally, the proposed measure is applied to analyze the collision accident between two ships. Compared with the conventional risk indicators, the proposed R-TCR can deliver extra information to users, such as providing early warning, showing the room-for-maneuver, and suggesting evasive actions. Besides, the extra information also supports collision avoidance for autonomous ships.
KW - Collision avoidance
KW - COLREG rules
KW - Conflict risk
KW - Maneuverability
KW - Ship domain
KW - TCR
UR - http://www.scopus.com/inward/record.url?scp=85107872749&partnerID=8YFLogxK
U2 - 10.1016/j.ress.2021.107816
DO - 10.1016/j.ress.2021.107816
M3 - Article
AN - SCOPUS:85107872749
SN - 0951-8320
VL - 215
JO - Reliability Engineering and System Safety
JF - Reliability Engineering and System Safety
M1 - 107816
ER -