基于物联网技术的船舶海上目标远距离定位算法

Long-distance localization algorithm for marine targets based on internet of things technology

针对传统的船舶海上目标远距离定位算法存在的缺点,如定位精确度低、数据处理耗时长等,提出基于物联网技术的船舶海上目标远距离定位算法。首先,基于物联网技术中的节点定位技术,针对船舶的3个自由度建立船舶运动模型;然后,确定未知节点的初始值,再与信标位置节点相结合,利用最小二乘法对定位偏差进行计算;最后,将初始值进行递归,得到未知节点坐标,至此实现基于物联网技术的船舶海上目标远距离定位算法。实验结果表明,与传统的定位算法相比,提出的定位算法的数据处理耗时最多可减少35 ms,平均定位误差减少0.58 m,其定位精确度更高,耗时更短,可以有效地实现船舶海上目标远距离定位。

Aiming at the shortcomings of the traditional long-distance positioning algorithm for marine targets,such as low positioning accuracy and long data processing time,a remote positioning algorithm for marine targets based on internet of things technology is proposed.Firstly,based on the node localization technology in the Internet of Things technology,the ship motion model is established for the three degrees of freedom of the ship,then,the initial value of the unknown node is determined,and then combined with the beacon position node,the least square method is used to calculate the positioning deviation,finally,the initial value is recursively obtained to obtain the coordinates of the unknown node,and the remote positioning algorithm of the ship’s maritime target based on the internet of things technology is realized.The experimental results show that compared with the traditional positioning algorithm,the data processing time of the proposed positioning algorithm can be reduced by up to 35 ms,the average positioning error is reduced by 0.58 m,the positioning accuracy is higher,the time is shorter,and the ship can be effectively realized.The maritime target is located at a distance.