| BDS区域卫星导航系统空间信号精度评估 |
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| 引用本文： | 张清华,王源,孙阳阳,高磊,陈正生.BDS区域卫星导航系统空间信号精度评估[J].大地测量与地球动力学,2015,35(5):764-767. |
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| 作者姓名： | 张清华 王源 孙阳阳 高磊 陈正生 |
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| 作者单位： | 1.解放军理工大学国防工程学院，南京市海福巷1号，210007
2 地理信息工程国家重点实验室，西安市雁塔中路1号，710054
3 第二炮兵工程学院，西安市同心路2号，710000 |
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| 摘 要： | 针对BDS区域卫星导航系统的空间信号精度评估问题，分析利用精密星历进行空间信号评估的算法以及SISURE的投影原理，讨论BDS不同星座的参数选择。估计BDS各个卫星的空间信号精度，估算出SISURE综合误差的平均值为1.54 m，与GPS的空间信号精度还存在一定差距。针对个别导航卫星某些分量误差偏大的情况进行分析，发现GEO卫星SISURE个别时段较差和轨道机动有一定关系，并明确了BDS实际的空间信号精度，可为BDS用户提供一定参考。
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| 关 键 词： | BDS-空间信号-精密星历 SISURE 精度评估 |
| 收稿时间： | 2014-08-12 |
Initial Signal-in-Space Assessment of Beidou Satellite Navigation System |
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| ZHANG Qinghua,WANG Yuan,SUN Yangyang,GAO Lei,CHEN Zhengsheng.Initial Signal-in-Space Assessment of Beidou Satellite Navigation System[J].Journal of Geodesy and Geodynamics,2015,35(5):764-767. |
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| Authors: | ZHANG Qinghua WANG Yuan SUN Yangyang GAO Lei CHEN Zhengsheng |
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| Institution: | 1.College of Defense Engineering，PLA University of Science and Technology, 1 Haifu Lane, Nanjing 210007, China;2.State Key Laboratory of Geographic Information Engineering, 1 Yanta Road, Xi’an 710054, China;3.The Second Artillery Engineering University, 2 Tongxin Road, Xi’an 710000, China |
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| Abstract: | For signal-in-space accuracy assessment of the BDS regional satellite navigation system, this paper analyzes the use of precise ephemeris algorithms for spatial signal evaluation and the projection principle of SISURE. Further, it discusses the parameters for BDS of different constellations. In the examples, this paper estimates the signal-in-space accuracy in BDS of various satellites, and finds that the average SISURE grated error reaches 1.54 m, and that there is still a gap between BDS and GPS. This paper also analyzes larger signal-in-space errors of some satellite components and finds some important conclusions. |
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