Multi-GNSS高轨航天器定位性能STK仿真分析  

STK Simulation Analysis of High Orbit Spacecraft Positioning Performance Based on Multi-GNSS

作　　者：王琪智 李文建 马祥泰 胡彦逢 WANG Qi-zhi;LI Wen-jian;MA Xiang-tai;HU Yan-feng(Space Engineering University,Beijing 101416,China;Unit 96726,Qingyuan Guangdong 511500,China)

机构地区：[1]航天工程大学,北京101416 [2]96726部队,广东清远511500

出　　处：《计算机仿真》2024年第11期47-52,共6页Computer Simulation

基　　金：42174044(国家自然科学基金)。

摘　　要：高轨卫星轨道高度高,在气象、通信等方面有着中低轨卫星不可比拟的特点。随着技术发展,高轨卫星的应用也不断增多,利用Multi-GNSS实现高轨航天器的自主定位是当前国内外的研究热点。基于STK软件构建了全球四大卫星导航系统星座以及增强系统和目标高轨航天器的仿真模型。以各GNSS单系统与双系统组合对高轨航天器的定位效果从可见星数、DOP值、导航精度三个方面为评估标准,对GNSS用于高轨航天器的导航精度与适应性进行验证分析。分别得到了在单系统和双系统对高轨航天器定位时北斗单系统以及GLONASS与增强系统融合更适用于高轨航天器的定位。High orbit satellites have high orbital heights and unparalleled characteristics in meteorology,communi-cation,and other fields compared to medium and low orbit satellites.With the development of technology,the applications of high-orbit satellites are also increasing.The autonomous positioning of high-orbit spacecraft by using Multi-GNSS is a research hotspot at home and abroad.Based on STK software,simulation models of four global navigation satellite system constellations,augmentation system and target high-orbit spacecraft are constructed in this paper.The positioning effect of GNSS single system and dual system combination on high orbit spacecraft is evaluated from three aspects:the number of visible stars,DOP value and navigation accuracy.The navigation accuracy and adaptability of GNSS used in high orbit spacecraft are verified and analyzed.The results show that Beidou single system and GLO-NASS and enhanced system are more suitable for high-orbit spacecraft positioning when single system and double system are used to locate high-orbit spacecraft.

关 键 词：高轨卫星 定位性能 仿真分析 

分 类 号：V411.8[航空宇航科学与技术—航空宇航推进理论与工程]