GPS Orbit and Clock Error Distributions
GPS Orbit and Clock Error Distributions
复制标题
DOI：
10.1002/j.2161-4296.2011.tb01789.x
复制
发表时间：
2011-03
影响因子：
--
通讯作者：
Curtis Cohenour;F. Graas
中科院分区：
文献类型：
--
作者：
Curtis Cohenour;F. Graas
诚信是民用航空最重要的要求之一。实现全球定位系统(GPS)辅助导航所需完整性的一种方法是使用接收器自主完整性监视(RAIM)，并且对于主要导航手段，使用接收器自主完整性监视和排除(RAIME)。RAIM(E)算法参数取决于卫星故障条件(异常)的假设概率和超越实际用户距离误差分布的正态分布的无故障标准偏差。本文根据2005年6月开始的三年时间内的广播星历和从在线来源获得的真实数据，计算了GPS时钟和轨道误差。异常卫星行为被识别并从数据集中移除。对剩余的无故障数据进行统计分析。卫星区块类型提供了异常、累积分布和正态分布标准差上限表。
Integrity is one of the most important requirements for civilian aviation. One method of achieving the required integrity for supplemental Global Positioning System (GPS) navigation is the use of Receiver Autonomous Integrity Monitoring (RAIM), and for primary means of navigation, Receiver Autonomous Integrity Monitoring and Exclusion (RAIME). The RAIM(E) algorithm parameters depend on the assumed probability of a satellite fault condition (anomaly) and on the fault-free standard deviation of a normal distribution that over-bounds the actual user range error distribution. In this paper, GPS clock and orbit errors are calculated based on the broadcast ephemeredes and truth data obtained from online sources for the three year period starting in June 2005. Anomalous satellite behavior is identified and removed from the data set. The remaining fault-free data are analyzed statistically. A table of anomalies, cumulative distributions, and normal distribution standard deviation overbounds are provided by satellite Block Type.