罗兰C与天文船位线联合定位研究

Research on joint positioning of Loran-C and astronomical line of position

针对罗兰C导航系统和海上天文定位存在的缺陷,提出了舰船在海上利用罗兰C船位线和天文船位线联合定位的方法,重点研究了一条罗兰C船位线和一条天文船位线的联合定位。在高度差法天文船位线和罗兰C船位线数学模型基础上,建立了二者联合定位数学模型,并在东海海域进行定位实验,观测不同罗兰C台对和太阳高度,对定位结果进行了分析,精度完全满足海上舰船定位要求,表明方法可行。本文提出的船位线联合定位方法可为提高舰船自主导航能力提供有力支撑。

To make up for the defects of Loran-C navigation system and maritime astronomical positioning,a joint positioning method for ships at sea using Loran-C position line and astronomical position line is proposed.Focusing on a Loran-C position line and an astronomical position line joint positioning,based on the mathematical model of the astronomical position line and Loran-C position line by the height difference method,the joint positioning mathematical model of the two is established.The positioning experiments are carried out by observing different Loran-C stations and the sun altitude in the East China Sea,and the positioning results are analyzed.The results show that the method is feasible,and the accuracy fully meets the requirements of ship positioning.The joint positioning method of ship position line proposed in this paper can provide strong support for improving the autonomous navigation ability of ships.