Testing the test satellites: the Galileo IOV measurement accuracy
Testing the test satellites: the Galileo IOV measurement accuracy
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DOI：
10.1109/icl-gnss.2013.6577253
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发表时间：
2013-06
期刊：
影响因子：
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通讯作者：
A. Angrisano;S. Gaglione;C. Gioia;D. Borio;J. Fortuny-Guasch
中科院分区：
文献类型：
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作者：
A. Angrisano;S. Gaglione;C. Gioia;D. Borio;J. Fortuny-Guasch
欧洲全球导航卫星系统伽利略目前正处于在轨验证阶段，最终有四颗卫星可用于计算用户位置。在这一阶段，对从IOV卫星获得的测量结果的分析可以提供关于伽利略系统的性能和潜力的见解。在本文中，一种方法的基础上使用精确的轨道和电离层校正建议的伽利略IOV伪距和伪距率误差的分析。使用Septentrio PolarRxS接收器收集了几个小时的数据，并用于确定伽利略可观测数据的RMS和最大误差等优点。从分析中可以看出，伽利略测量的准确度与全球定位系统的准确度相当。组合GPS-伽利略定位的好处也突出显示，并提供了结果相对于计算的伽利略只有导航解决方案的基础上广播星历。
The European GNSS, Galileo, is currently in its In-Orbit Validation (IOV) phase where four satellites are finally available for computing the user position. In this phase, the analysis of the measurements obtained from the IOV satellites can provide insight on the performance and potentialities of the Galileo system. In this paper, a methodology based on the use of precise orbits and ionospheric corrections is suggested for the analysis of the Galileo IOV pseudorange and pseudorange rate errors. Several hours of data were collected using a Septentrio PolarRxS receiver and used to determine figures of merits such as RMS and maximum errors of the Galileo observables. From the analysis it emerges that Galileo measurements have accuracies comparable with those of GPS. The benefits of combined GPS-Galileo positioning are also highlighted and results relative to the computation of a Galileo-only navigation solution based on broadcast ephemerides are provided.