引用本文: 罗小敏, 蔡昌盛, 朱建军, 潘林, 李施佳. 利用Galileo IOV卫星观测数据的单点定位精度分析[J]. 武汉大学学报 ( 信息科学版), 2015, 40(2): 199-203.
Luo Xiaomin, Cai Changsheng, Zhu Jianjun, Pan Lin, Li Shijia. Accuracy Assessment of Single Point Positioning Based on Observational Data from Galileo IOV Satellites[J]. Geomatics and Information Science of Wuhan University, 2015, 40(2): 199-203.
 Citation: Luo Xiaomin, Cai Changsheng, Zhu Jianjun, Pan Lin, Li Shijia. Accuracy Assessment of Single Point Positioning Based on Observational Data from Galileo IOV Satellites[J]. Geomatics and Information Science of Wuhan University, 2015, 40(2): 199-203.

## Accuracy Assessment of Single Point Positioning Based on Observational Data from Galileo IOV Satellites

• 摘要: 介绍了Galileo单点定位数学模型,在对各项误差进行改正的基础上,利用MGEX跟踪站连续7d的IOV卫星观测数据进行Galileo伪距单点定位试算。结果表明,基于4颗IOV卫星的Galileo单点定位的性能低于全星座的GPS单点定位,其中Galileo单点定位的水平方向精度优于4.5m,高程方向精度优于9.0m。相比于GPS单系统,增加Galileo卫星后的GPS/Galileo组合单点定位在3个坐标分量上的定位精度均有不同程度的提高。

Abstract: A mathematic model for Galileo single point positioning is introduced. After errors corrections are made，Galileo single point positioning is performed using observation data from IOV satelliter at MUEX tracking stations on seven consecutive days. The results indicate that the single point positioning performance of Galileo based on four IOV satellites was inferior to UPS single point positioning based on a full constellation. The accuracy was better than 4. 5 m and 9. 0 m for the horizontal direction and vertical direction，respectively. The accuracy of combined GPS/Galileo single point positioning was better than GPS-only single point positioning in three coordinate components.

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