基于模糊结构元方法的船舶航迹拟合

摘要

When adopting theship track fitting based on AIS data,the traditional method,such as least square algorithm or interpolation method,would smooth the deviation caused by ship position's fluctu-ation.This kind of the fitting may lose its significance because the fluctuation phenomenon could not be reflected really and directly.Then,the ship track fitting method based on fuzzy structured element was proposed The method not only described the variation tendency of ship position,but also reflected visually the uncertain degree of this variation tendency.Finally we could analyse and verify the method by an real example.%在采用船舶 AIS 数据进行船舶航迹拟合时，传统的航迹拟合方法如最小二乘法或插值法等会平滑掉船舶位置波动的偏差，不能真实地反映出船舶位置的波动现象而失去其意义。提出基于模糊结构元的船舶航迹拟合方法，不仅能够描述船舶位置变化趋势，而且能够直观反映出这种变化趋势的不确定性程度，并通过实例进行了分析验证。