| Galileo卫星导航系统初始运行阶段单点定位性能评估与分析 |
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| 引用本文： | 丁 赫,刘 帅,孙付平,王浩源.Galileo卫星导航系统初始运行阶段单点定位性能评估与分析[J].大地测量与地球动力学,2018,38(10):1038-1042. |
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| 作者姓名： | 丁 赫 刘 帅 孙付平 王浩源 |
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| 摘 要： | 基于多GNSS实验跟踪网（the multi-GNSS experiment,MGEX)的实测数据，对当前Galileo单系统标准单点定位（SPP）和精密单点定位（PPP）性能进行评估与分析。结果表明：1）Galileo双频标准单点定位的水平精度优于2 m，垂向精度优于4 m；2）GAL-201、GAL-202可用于SPP解算，引入二者之后，平均定位可用率提升10%，达到80%以上；3）当观测时长为3 h时，Galileo静态PPP可达到水平方向优于5 cm、垂向优于7 cm的定位精度；而随着观测时长的增加，其精度逐步提高，当观测时长为24 h时，水平精度优于1 cm，垂向精度优于3 cm。
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| 关 键 词： | Galileo卫星导航系统 标准单点定位 精密单点定位 定位可用率 定位精度 |
Single Positioning Performance Assessment and Analysis of Galileo Satellite Navigation System in the Initial Operation Phase |
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| DING He,LIU Shuai,SUN Fuping,WANG Haoyuan.Single Positioning Performance Assessment and Analysis of Galileo Satellite Navigation System in the Initial Operation Phase[J].Journal of Geodesy and Geodynamics,2018,38(10):1038-1042. |
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| Authors: | DING He LIU Shuai SUN Fuping WANG Haoyuan |
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| Abstract: | Galileo satellite navigation system has begun to provide initial services. GAL-201 and GAL-202, which did not enter the scheduled orbit, have broadcast navigation messages as well. Based on the measured data of MGEX, the positioning performance of the current Galileo system is evaluated and analyzed. The results show that: 1) Galileo standard point positioning (SPP) can reach positioning accuracy 2 m in horizontal, 4 m in vertical; 2) GAL-201 and GAL-202 can now be used as SPP solvers. After their introduction, the average positioning availability increases by 10% and reaches more than 80%; 3) when the observation time is 3 hours, Galileo precise point positioning (PPP) can only reach an accuracy of 5 cm in horizontal,7 cm in vertical. However, with the increase in observation time, accuracy gradually improves. When the observation time is 24 hours, the horizontal accuracy is better than 1 cm, and the vertical accuracy is better than 3 cm. |
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| Keywords: | Galileo satellite navigation system standard point positioning precise point positioning positioning availability positioning accuracy |
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