| 误差与先验信息对导航卫星自主定轨的影响研究 |
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| 引用本文： | 李征航,龚晓颖,刘万科.误差与先验信息对导航卫星自主定轨的影响研究[J].武汉大学学报(信息科学版),2011(7):797-801,834. |
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| 作者姓名： | 李征航 龚晓颖 刘万科 |
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| 作者单位： | 武汉大学测绘学院; |
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| 基金项目： | 国家863计划资助项目(2006AA12Z325,2009AA12Z301); 武汉大学卫星导航与定位教育部重点实验室(B类)开放研究基金资助项目(GRC-2009008) |
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| 摘 要： | 介绍了利用星间距离观测值和由预报星历提供的先验信息采用最小二乘配置法进行导航卫星自主定轨的方法、模型及软件;采用自编软件进行了一系列的模拟计算,分别探讨了观测值随机噪声、残余系统误差和先验信息的好坏对自主定轨精度的影响。结果表明,随机噪声对自主定轨精度的影响不明显,而系统误差和先验信息的影响则较为重要,值得关注。
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| 关 键 词： | 自主定轨 星间距离观测值 观测噪声 系统误差 先验信息 |
Influence of Error and Prior Information to AOD of Navigation Satellites |
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| LI Zhenghang GONG Xiaoying LIU Wanke.Influence of Error and Prior Information to AOD of Navigation Satellites[J].Geomatics and Information Science of Wuhan University,2011(7):797-801,834. |
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| Authors: | LI Zhenghang GONG Xiaoying LIU Wanke |
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| Institution: | LI Zhenghang1 GONG Xiaoying1 LIU Wanke1(1 School of Geodesy and Geomatics,Wuhan University,129 Luoyu Road,Wuhan 430079,China) |
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| Abstract: | Method,model and software of AOD(autonomous orbit determination) of navigation satellites by using least square collocation method has been introduced in this paper based on cross-link ranging observations and the prior information provided by forecasting ephemeris.Series of simulations through self-developed software has discussed the influence of measurement noise,residual systematic error of observations and the quality of prior information to precision of AOD.Results indicated that measurement noise con... |
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| Keywords: | AOD(autonomous orbit determination) cross-link ranging observations measurement noise systematic error prior information |
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