摘要
利用向量函数表达船舶时间与空间坐标之间的关系,该向量函数的切线和变化率可反映出船舶的运动方向、速度和加速度等信息。根据已知的船舶动态信息优化船舶运动向量参数,建立船舶运动状态插值模型,从而对任意给定时刻的船舶动态信息进行插值。试验结果表明:船舶运动状态向量函数可以准确地表达船舶运动状态的时空特性;船舶运动状态插值模型不仅可以插值求解任意给定时刻的船舶位置,而且可以插值求解其航向和航速信息,且插值数据精度较高。
A vector-based interpolation algorithm for determining ship motion states is introduced at given time according to the ship movement messages, which come in at rather long interval. The Vector function is used to express the space coor- dinates of a ship vs. time, and the derivative of the vector function and its change rate reflect the course, speed and accel- eration of the ship. Experiments show that the ship motion vector function is effective in reflecting the characteristics of ship movements, and the algorithm can estimate the course and speed of ships as well as the position at arbitrarily defined time.
出处
《中国航海》
CSCD
北大核心
2015年第1期71-74,79,共5页
Navigation of China
基金
上海市人才发展资金(201436)
交通运输部应用基础(主干学科)项目(2015329810030)
