北斗卫星/伪卫星组合定位关键技术研究

Key Technologies of Beidou/Pseudo-satellite Integrated Positioning Technology

根据北斗系统定位原理,分析了同步伪卫星的几何布局、伪卫星数目及与卫星组合定位对定位精度的影响。仿真结果表明,在相同的误差条件下,伪卫星系统独立定位时,良好的几何分布及适当的伪卫星数目有利于伪卫星定位。与卫星组合定位时可以有效地改善定位网络的几何分布,减小精度因子值,从而提高定位精度。

This paper analyzes the influence on the Beidou system positioning precision of the geometric layout, the number of pseudo satellites and the combination of the satellites. The simulation results show that under the same error conditions, the good geometric distribution and the appropriate number of pseudo satellite are conducive to the positioning of the satellite positioning when the pseudo satellite system is positioned independently.