| 两星一地时差定位方法性能分析 |
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| 引用本文： | 王玉林,夏彬,张宗恕.两星一地时差定位方法性能分析[J].航天电子对抗,2021(1). |
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| 作者姓名： | 王玉林 夏彬 张宗恕 |
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| 作者单位： | 中国电子科技集团公司第54研究所;战略支援部队某部 |
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| 摘 要： | 针对同轨多星定位系统以及高低轨联合定位系统需要卫星数量多的特点,设想地面站和卫星联合定位体制。考虑到时差定位体制对卫星运动不敏感的特征,提出一星三地和两星一地2种定位体制,从定位场景、定位原理、理论定位误差和误差分布4个方面对定位效能分析。重点论述了两星一地时差定位误差的地理分布、时间分布以及受高度的影响,对将来的工程化应用提供支撑。
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| 关 键 词： | 时差定位 星地联合定位 一星三地 两星一地 误差分布 |
Performance analysis of two?star and one station joint TDOA location method |
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| Wang Yulin,Xia Bin,Zhang Zongshu.Performance analysis of two?star and one station joint TDOA location method[J].Aerospace Electronic Warfare,2021(1). |
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| Authors: | Wang Yulin Xia Bin Zhang Zongshu |
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| Institution: | (The 54th Research Institute of CETC,Shijiazhuang 050081,Hebei,China;Part of Strategic Support Troops,Fuzhou 350000,Fujian,China) |
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| Abstract: | In view of the large number of satellites required for the co-orbit multi-satellite positioning system and the high-low orbit joint positioning system,the joint positioning system of ground stations and satellites is envisaged.Taking into account the fact that the time difference positioning system is not sensitive to satellite motion,two time difference positioning systems which are one star/three stations,one star/two stations and two stars/one station are proposed.The performance is analyzed from four aspects:location scene,location principle,theoretical location error and error distribution.The validity of the positioning model is proved by simulation,and the geographical distribution of the error is analyzed theoretically,which provides support for the future engineering application. |
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| Keywords: | time difference location joint satellite-ground positioning one star/three stations two stars/one station distribution of error |
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