A Ship Collision Risk and Risk Assessment Method Based on Associated Avoidance Behavior

Abstract

The invention discloses a ship collision risk and risk degree evaluation method capable of associating with avoidance behaviors. The method comprises the following steps that: establishing a ship potential risk evaluation threshold value SDA (Safe Distance of Approach) quantization model, a ship potential risk evaluation model, a ship collision risk degree judgment threshold value model and an initial reference ship judgment model; through the established models, carrying out avoidance effect prediction on an approach situation and an avoidance scheme; if the avoidance effect is under a safe,secondary safe or under-safe level, proving that the avoidance scheme is feasible; and if the avoidance effect is under an unsafe level, starting an immediate risk coordination avoidance scheme. Through the above method, an urgent degree of a current ship to adopt a measure under a current approach situation can be evaluated, and the avoidance effect of an avoidance decision formed through a PIDVCA (Personifying Intelligent Decision-making for Vessel Collision Avoidance) decision algorithm can be evaluated to guarantee that the current ship is safely avoided. Objectivity and subjectivity are combined, the practical approach scene is comprehensively considered through ship relative motion vector geometric graphic analysis, a redirection avoidance behavior is associated, and a final avoidance decision is safe, economic and scientific.

Description

technical field [0001] The invention relates to the technical field of ship navigation safety interdisciplinary of traffic information engineering and control and vehicle utilization engineering, in particular to a ship collision risk and risk evaluation method associated with avoidance behavior. Background technique [0002] At present, there is a potential collision risk and risk evaluation mechanism between the two ships: when the DCPA of the two ships is less than the set minimum safe encounter distance MINCPA (SDA) and the TCPA is less than the set MINTCPA, the system will issue a collision risk alarm. As for the size, speed, and situation of the encounter between the two ships, the pilot of the ship has different perceptions of whether there is a potential collision risk between the two ships, that is, there are different requirements for MINCPA and MINTCPA at the time of the encounter. For example, MINCPA and MINTCPA can be reduced for small ships or slow ships or ove...

AI Technical Summary

Problems solved by technology

[0003] The existing radar, ARPA function, and shore-based VTS collision risk early warning and risk evaluation mechanism have the following deficiencies: 1. Failure to fully consider the different influences of factors such as the size of the target ship, speed, and encounter situation. It is unreasonable and unscientific to set the same risk assessment threshold; 2. The difficulty of avoidance is not considered, and the assessment results are limited

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