基于伪卫星的北斗双星导航系统DOP值

The Research on DOP of Beidou Positioning System Using Pseudolite

在分析北斗导航定位系统原理的基础上，探讨了利用伪卫星来提高其定位精度的方法。采用2颗～4颗伪卫星辅助北斗定位系统对用户进行导航定位。仿真结果表明，伪卫星辅助的导航定位系统能改善卫星几何布局，减小DOP值。增加伪卫星的数目能提高定位精度；合理布局现有伪卫星能进一步提高定位精度。

Based on the analysis of the positioning theory on the Beidou positioning system, using pseudolite to improve the positioning precision is studied. In this paper, the user is positioned by Beidou positioning system which aided by 2 to 4 pseudolites. The simulation results show that the pseudolite techniques can intensify the geometric layout of the constellation and decrease the dilution of precision （DOP）. The positioning precision can improved by increasing the number of pseudolite and configuring pseudolites rationally.