By combining the sliding window algorithm and considering the geometric characteristics of ship trajectory and the dynamic factors of ship steering angle,the curved section and straight section of ship trajectory were adaptively segmented,and their corresponding compression thresholds were a-daptively selected to realize the compression of trajectory data.On the premise of retaining more im-portant feature points,the trajectory compression rate was improved.By comparing the improved compression method with the traditional method,it is verified that the proposed method can greatly compress the trajectory data on the premise of retaining more trajectory feature points.
维普
万方数据