An analysis of ship collision risk parameters based on speed ship domain

According to a large number of contemporary studies on ship collision avoidance, the traditional DCPA and TCPA are not enough to estimate the ship collision risk and plan the avoidance operation. In order to solve the problems of insufficient accuracy of collision risk calculation and poor risk identification in ship collision avoidance decision-making, a new elliptical ship domain is proposed through the combination of Coldwell ship domain and quaternion ship domain. Based on this ship field, the multi ship collision risk assessment model is improved, and the accuracy before and after the improvement is compared. The results show that the improved model can identify target ships with similar motion parameters, and the identification accuracy is higher. The improved model can provide theoretical support for more complex multi ship collision avoidance.