| 利用GNSS实现高轨卫星自主导航的新方案 |
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| 引用本文： | 何清举,孙前贵.利用GNSS实现高轨卫星自主导航的新方案[J].飞行器测控学报,2010(1):7-11. |
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| 作者姓名： | 何清举 孙前贵 |
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| 作者单位： | 北京跟踪与通信技术研究所; |
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| 摘 要： | 针对GNSS应用于GEO卫星导航存在的导航信号弱、可见卫星少、定位几何差等突出问题,探讨了一种在GPS导航星冲天面安装导航天线并辐射导航信号的新方案,设计了冲天面天线和GEO接收天线的波束宽度和增益以及讨论了冲天天线所需发射功率,分析了新方案中GEO卫星对GPS卫星可见性、GDOP和定位精度。分析表明,新方案仅需从现有导航星引出一部天线,即可实现以小于10W的功率代价使得GEO卫星80%以上的时间里可以利用GPS系统定位,且定位精度约77m。通过仿真验证了本方案的可行性。
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| 关 键 词： | GEO卫星 自主导航 卫星导航系统 |
A New Solution of Autonomous Navigation for GEO Satellites Based on GNSS |
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| HE Qing-ju,SUN Qian-gui.A New Solution of Autonomous Navigation for GEO Satellites Based on GNSS[J].Journal of Spacecraft TT&C Technology,2010(1):7-11. |
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| Authors: | HE Qing-ju SUN Qian-gui |
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| Institution: | HE Qing-ju,SUN Qian-gui(Beijing Institute of Tracking and Telecommunications Technology,Beijing 100094) |
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| Abstract: | To solve problems such as weak navigation signals,lack of visible navigation satellites and poor performance of GDOP for HEO autonomous navigation based on GNSS,this paper presents a new solution,where a new antenna is added to a navigation satellite.Transmit and receive antenna pattern is designed and the required transmit power is studied.Finally,the visibility of navigation satellites,geometric dilution of precision and the precision of the new solution are analyzed.It is verified that a single extra ant... |
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| Keywords: | GEO Satellite Autonomous Navigation Global Navigation Satellite System |
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