Confirmation method for key avoidance ship by autonomously driving ship based on projection pursuit method

The invention, which relates to the technical field of autonomous ship collision avoidance, provides a confirmation method for key avoidance ship by an autonomously driving ship based on projection pursuit method. The method comprises the following steps: S1, acquiring basic information of a cluster where an autonomously driving ship is located under the condition that the autonomously driving ship travels in the cluster of a complex navigation environment; and S2, according to the basic information of the cluster, determining a projection characteristic value of the information of each othership relative to the autonomously driving ship in the cluster in an optimal projection direction by adopting a projection pursuit model, and determining a key avoidance ship of the autonomously driving ship according to the optimal projection characteristic value of the information of each other ship to enable the autonomously driving ship to executes collision avoidance operation. All informationin the high-dimensional d