基本星座下北斗卫星导航系统服务性能分析

摘要

Performance analysis is a key technical indicator of navigation system. This paper analyzes the measurement accuracy, visibility and other performance indicators of CNSS currently, adopting the graphic display technique and computer emulation technique to design the performance system software. The software can express the performance indicators directly and visually. This paper analyzes the characteristic of CNSS and CNSS compatible with GPS in China mainland currently, this research has practical effect to COMPASS system.%系统服务性能是卫星导航系统的关键技术指标。在分析可见性、几何精度因子等系统服务性能指标的基础上，采用图形显示技术和计算机仿真技术，设计实现了导航系统服务性能分析软件。重点针对现阶段基本星座下3颗地球同步轨道卫星（GEO），3颗倾斜地球同步轨道卫星（IGSO）的北斗卫星导航系统服务性能进行了仿真分析，对比了北斗卫星导航系统（COMPASS）与GPS兼容后在中国地区测量精度的变化。