为了提高船舶航行安全性，并应对航行过程潜在碰撞风险，提出海上高速航行船舶触礁距离实时计算方法。通过航海雷达探测船舶航行环境中的礁石目标，确定极坐标系下的位置坐标后，将其转换地心垂直坐标系下，构建基于PLSTM-FCN的船舶航迹预测模型，从船舶自动识别系统中获取高速航行船舶历史位置、航速、航向、船舶长度、宽度以及吃水深度等AIS数据，将其作为模型输入，模型输出为船舶航行实时位置预测结果，结合礁石目标位置，完成触礁距离的实时计算。实验结果表明，该方法可预测船舶航行航迹，预测MSE值仅为0.0022；可实现船舶触礁距离的实时计算，计算结果与实际距离误差介于0.77～1.55之间。
A real-time calculation method for the distance of high-speed vessels hitting reefs at sea is proposed to improve the safety of vessel navigation and address potential collision risks during navigation. By using navigation radar to detect reef targets in the navigation environment of ships, the position coordinates in the polar coordinate system are determined, and then they are converted into the geocentric vertical coordinate system. A ship trajectory prediction model based on PLSTM-FCN is constructed, and AIS data such as the historical position, speed, heading, length, width, and draft of high-speed sailing ships are obtained from the ship automatic recognition system, which is used as model input, The output of the model is the real-time position prediction result of the ship's navigation, combined with the target position of the reef, to complete the real-time calculation of the distance to the reef. The experimental results show that this method can predict the navigation trajectory of ships, with a predicted MSE value of only0.0022. It can achieve real-time calculation of ship's reef distance, and the calculation result has an error between (0.77,1.55) and the actual distance.
2024,46(4): 66-69 收稿日期：2023-10-19
DOI：10.3404/j.issn.1672-7649.2024.04.013
分类号：U612
作者简介：石磊(1982-),女,硕士,讲师,研究方向为计算数学及基础数学
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