北斗卫星导航系统空间信号用户测距误差计算方法研究
发布时间：2018-11-26 09:00
【摘要】：按照空间信号用户测距误差(User Range Error,URE)定义,参考GPS标准定位服务性能规范中URE的计算方法,结合北斗卫星导航系统(BDS)多星混合星座类型,在考虑仰角限制情况下,详细推导了适用于BDS的瞬时URE和均方根URE计算公式。利用广播星历和精密星历计算的卫星轨道误差和卫星钟钟差,带入所推导的公式,对BDS URE进行分析评估;并使用GNSS接收机原始观测量和伪距观测方程计算BDS URE,最后将两种计算结果进行对比分析。研究结果表明,两种方法 BDS URE的计算结果基本一致,在95%置信度情况下均小于2.5m,满足北斗公开服务性能规范中对空间信号URE的基本要求。
[Abstract]:According to the definition of space signal user ranging error (User Range Error,URE), and referring to the calculation method of URE in GPS standard positioning service specification, combined with the type of (BDS) multi-star hybrid constellation of Beidou satellite navigation system, considering the elevation angle limit, The formulas of instantaneous URE and root-mean-square URE for BDS are derived in detail. Using the satellite orbit error and satellite clock error calculated by broadcast ephemeris and precise ephemeris into the derived formula, the BDS URE is analyzed and evaluated. The original observations and pseudo-range equations of the GNSS receiver are used to calculate the BDS URE,. Finally, the results of the two calculations are compared and analyzed. The results show that the calculated results of the two BDS URE methods are basically the same, and are less than 2.5 m in the case of 95% confidence, which meets the basic requirements of Beidou open service performance specification for spatial signal URE.
【作者单位】： 中国民航大学电子信息与自动化学院;
【基金】：民航安全能力建设项目“北斗机载设备技术标准规定与应用研究”(AADSA0007) 国家重点研发计划“广域航空安全监控技术及应用”项目“星基定位监视与机载设备适航技术”课题(2016YFB0502402)
【分类号】：TN967.1
本文编号：2358067
[Abstract]:According to the definition of space signal user ranging error (User Range Error,URE), and referring to the calculation method of URE in GPS standard positioning service specification, combined with the type of (BDS) multi-star hybrid constellation of Beidou satellite navigation system, considering the elevation angle limit, The formulas of instantaneous URE and root-mean-square URE for BDS are derived in detail. Using the satellite orbit error and satellite clock error calculated by broadcast ephemeris and precise ephemeris into the derived formula, the BDS URE is analyzed and evaluated. The original observations and pseudo-range equations of the GNSS receiver are used to calculate the BDS URE,. Finally, the results of the two calculations are compared and analyzed. The results show that the calculated results of the two BDS URE methods are basically the same, and are less than 2.5 m in the case of 95% confidence, which meets the basic requirements of Beidou open service performance specification for spatial signal URE.
【作者单位】： 中国民航大学电子信息与自动化学院;
【基金】：民航安全能力建设项目“北斗机载设备技术标准规定与应用研究”(AADSA0007) 国家重点研发计划“广域航空安全监控技术及应用”项目“星基定位监视与机载设备适航技术”课题(2016YFB0502402)
【分类号】：TN967.1
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