基于激光微波混合星间链路的导航星座网络优化方法  

Optimization method of navigation constellation network based on laser microwave hybrid inter satellite link

作　　者：章可钦 林宝军 刘迎春[1,2,3] 董明佶 邵瑞强 ZHANG Keqin;LIN Baojun;LIU Yingchun;DONG Mingji;SHAO Ruiqiang(Institute of Microsatellite Innovation,Chinese Academy of Sciences,Shanghai 201210,China;Shanghai Microsatellite Engineering Center,Shanghai 201210,China;Institute of Aerospace Information Innovation,Chinese Academy of Sciences,Beijing 100094,China;School of Electrical,Electrical and Communication Engineering,University of Chinese Academy of Sciences,Beijing 100094,China;School of Information Science and Technology,Shanghai University of Science and Technology,Shanghai 201210,China)

机构地区：[1]中国科学院微小卫星创新研究院,上海201210 [2]上海微小卫星工程中心,上海201210 [3]中国科学院空天信息创新研究院,北京100094 [4]中国科学院大学电子电气与通信工程学院,北京100094 [5]上海科技大学信息科学与技术学院,上海201210

出　　处：《光通信技术》2023年第4期62-66,共5页Optical Communication Technology

摘　　要：为满足空天信息传输容量快速增长的需求,针对未来卫星高速率大带宽的发展趋势,提出了基于激光微波混合星间链路的北斗导航网络优化方法。分析了混合链路在星间链路测距能力、路由收敛效率,并进行了仿真,验证了协同测距、协同管理方法在提升混合网络效率中的有效性。仿真结果表明:Ka频段激光协同测距时间相较传统微波网络短,定位精度因子(PDOP)最高值由3.4降低至2.3;混合网络路由收敛速度较单激光网络快,由41 s降至15 s左右。In order to meet the rapid growth demand of space information transmission capacity,and in response to the development trend of high speed and large bandwidth of future satellites,a Beidou navigation network optimization method based on laser microwave hybrid inter satellite links is proposed.The ability of inter-satellite link ranging and routing convergence efficiency of hybrid link are analyzed,and simulation is carried out to verify the effectiveness of collaborative ranging and collaborative management methods in improving the efficiency of hybrid network.The simulation results show that the Ka laser cooperative ranging time is shorter than the traditional microwave network,and the maximum positioning accuracy factor(PDOP)decreases from 3.4 to 2.3.The routing convergence speed of hybrid network is faster than that of single laser network,which decreases from 41 s to about 15 s.

关 键 词：星间链路 激光微波混合 导航星座 星座网络 网络优化 

分 类 号：TN929[电子电信—通信与信息系统]