北斗卫星导航系统动态定位精度测试与分析

随着北斗卫星导航系统的建设与发展推动全球卫星导航事业在民航的发展。介绍了卫星导航系统的定位误差通过与作为真值数据的组合导航定位数据进行比较仿真分析了实测数据下精度因子与可见星数目的占比分布北斗卫星导航系统在低海拔平原地区和高海拔山脉地区均可以提供实时导航定位服务且定位结果均符合《北斗卫星导航系统公开服务性能规范》标准，满足用户的定位要求。 

Dynamic Positioning Accuracy Test and Analysis of BeiDou Satellite Navigation System

With the construction and development of BeiDou satellite navigation system, we are committed to providing stable, reliable and high quality satellite navigation services to global users and promoting the development of global satellite navigation in civil aviation. This paper introduces the positioning error of the satellite navigation system and the main factors that affect the positioning accuracy. By comparing with the GPS／INS navigation data as the true value data, the positioning accuracy of the dynamic test points in different altitude regions is analyzed. Firstly, the distribution of DOP and the number of visible stars in the measured data is simulated and analyzed for the high altitude mountain range and the low altitude plain area, and the dynamic positioning accuracy of the two kinds of altitude is statistically analyzed. The results of the measured data show that the Beidou satellite navigation system can provide real-time navigation and positioning services both in the low altitude plain and in the high altitude mountain range, and can calculate the dynamic positioning accuracy of the satellite system, and the positioning results are in compliance with the standards of "BeiDou satellite navigation system performance standards for public service", to meet the user's positioning requirements.