数据链辅助北斗的连续导航定位技术  

Beidou Continuous Navigation and Positioning Technology Assisted by Data Link

作　　者：杜晓华 王春锋 张昭坤 DU Xiaohua;WANG Chunfeng;ZHANG Zhaokun(Xi’an Aerospace Remote Sensing Data Technology Co.,Ltd.,Xi’an Shaanxi 710100,China;Unit 94922 of PLA,Jinhua Zhejiang 321000,China)

机构地区：[1]西安航天天绘数据技术有限公司,陕西西安710100 [2]中国人民解放军94922部队,浙江金华321000

出　　处：《通信技术》2022年第2期218-222,共5页Communications Technology

摘　　要：针对干扰环境下北斗卫星观测数量可能少于4颗的问题,采用数据链系统辅助北斗导航定位以保证连续完整的绝对位置、速度和时间(Position Velocity and Time,PVT)能力的方法。该方法首先采用了紧组合原理对北斗卫星和数据链节点的观测量进行组合,并分析了组合后的定位精度及定位误差;其次对3颗卫星+2个数据链节点、3颗卫星+3个数据链节点定位的精度因子(Dilution of Precision,DOP)进行了仿真。仿真结果表明,数据链可以辅助非完整观测条件下的北斗实现连续导航定位。该研究对于战略打击武器及海上大型舰船等平台在战时干扰环境下的组合导航有重要意义。The number of observed Beidou satellites may be less than four in the interference environment.In order to ensure the continuous and complete absolute PVT(Position Velocity and Time)capability,the data link system with strong anti-interference ability is adopted to assist Beidou in navigation and positioning.Firstly,the observation values of satellites and data link nodes are combined,and the positioning accuracy and error are analyzed after the combination.Secondly,the DOP(Dilution of Precision)values of three satellites and two data link nodes or three satellites and three data link nodes are simulated.The simulation results indicate that the data link and Beidou satellites are combined to achieve continuous navigation and positioning under nonholonomic observation conditions.It is of great significance to the integrated navigation of typical global navigation platforms under the interference environment.

关 键 词：数据链 北斗 干扰环境 组合导航 绝对定位 

分 类 号：TN701[电子电信—电路与系统]