一种时间校准方法及在航运信息处理中应用  

A Time Calibration Algorithm and Its Application in Marine Information Processing

作　　者：张圣杰[1] 王天真[1] 汤天浩[1] 

机构地区：[1]上海海事大学物流工程学院,上海200135

出　　处：《中国航海》2010年第4期14-17,52,共5页Navigation of China

基　　金：交通部资助项目(2009-329-810-030);上海市教育委员会重点学科建设项目(J50602);上海市教育委员会科研创新项目(08YZ109);上海市教委支出预算项目(2008093);上海海事大学校基金重点项目(20100136)

摘　　要：传统的AIS与雷达目标信息融合中时间校准算法的计算存在复杂度高,融合精度低的缺点,且AIS和雷达的采样信息容易发生错漏的现象。针对上述问题,提出了一种基于最小二乘准则的时间校准算法。该方法的基本思想是采用样条函数对各传感器的采样数据进行拟合,并基于最小二乘准则在样条函数类中找出一函数使其满足拟合误差平方和最小的要求。与传统的方法相比,计算机仿真结果验证了新方法在计算复杂度上和融合精度上的有效性。Traditional time calibration algorithms in AIS and radar information fusion have shortcomings in computation cost and accuracy,besides,sampled information from AIS and Radar would probably be inaccurate or partly missing.Aiming at those problems,a time calibration algorithm based on Least-Square Criterion is presented.In the new algorithm sampled data by sensors are fitted by Spline function to get smooth curve for each,and the Spline function with minimal square sum of fitting error in the set of curves is taken as the resultant function.Against traditional cluster algorithm,effectiveness of the new algorithm is validated by computer simulation with Matlab.

关 键 词：船舶、舰船工程 信息融合 插值拟合 时间校准 雷达 自动识别系统 

分 类 号：U675.79[交通运输工程—船舶及航道工程]