北斗全球卫星导航系统境外星数据快速回传的路由优化方法  

Routing optimization method for fast return of data on overseas satellites in Beidou Global Navigation Satellite System

作　　者：高贺 王玲[1] 黄文德[2,3] 孙乐园 GAO He;WANG Ling;HUANG Wende;SUN Leyuan(College of Electrical and Information Engineering,Hunan University,Changsha410073,China;College of Mechatronics Engineeringand Automation,National University of Defense Technology,Changsha410073,China;Shanghai Astronomical Observatory,Chinese Academy of Sciences,Shanghai 200030,China)

机构地区：[1]湖南大学电气与信息工程学院,长沙410073 [2]国防科技大学机电工程与自动化学院,长沙410073 [3]中国科学院上海天文台,上海200030

出　　处：《中国空间科学技术》2018年第2期9-15,共7页Chinese Space Science and Technology

基　　金：中国博士后科学基金面上一等资助项目(2015M580365)

摘　　要：针对北斗全球卫星导航系统存在的全球布站不足问题,提出一种利用星间链路将境外星数据快速回传至境内的路由优化方法。首先描述地面站受限情况下的数据快速回传问题,明确传输路由的优化目标、生成规则、约束条件。然后提出基于遗传算法的时延最小数据传输路由优化策略。最后,对算法进行了验证。结果表明,在2个境内站条件下,北斗系统全星座最多2跳(6s内)完成数据传输,可满足境外数据快速回传的要求。In order to solve the problem of the lack of station in Beidou Global Navigation Satellite System,a route optimization method was proposed to quickly transmit the overseas satellite data to the domestic satellite by using the inter-satellite link.Firstly,the problem of fast data transmission in the case of limited number of ground stations was described,and the optimizationobjective,rules and constraints of data transmission routing were defined.Then,based on the genetic algorithm,the routing optimization method and the minimum data transmission scheme were proposed.Finally,the validity of the algorithm was verified.The results show data transmission is completed within 2 skips（6 seconds）in the Beidou system constellation with two domestic station conditions.This optimized result can meet the requirements of overseas data fast transmit.

关 键 词：北斗卫星导航系统 星间链路 数据传输 路由规划 遗传算法 

分 类 号：TN927[电子电信—通信与信息系统]