中文摘要：

本文在仿真出GPS系统与BDS系统卫星星座的基础上,对两种定位系统下的哈尔滨、武汉、广州、拉萨单个站点以及全球范围的卫星可见性、DOP值、定位精度进行了覆盖分析,并比较了两个系统定位性能的差异。实验结果表明,当前BDS系统在亚太地区与GPS系统的定位性能基本一致,可见卫星数比GPS系统稍多,但BDS系统的DOP值的波动却比GPS系统的要大,尤其在GEO与IGSO卫星覆盖的边缘区域,BDS的导航定位性能较差,在某些地区仍不能提供导航定位服务。

英文摘要：

Based on the simulation of GPS and BDS satellite constellations,this paper analyzes the satellite visibility,DOP value,and positioning accuracy of Harbin,Wuhan,Guangzhou,Lasa and the global satellite visibility,DOP value and positioning precision of the two positioning systems.The results show that the positioning performance of the BDS system in the Asia-Pacific region is basically the same as that of the GPS system.The number of satellites is slightly larger than that of the GPS system,but the fluctuation of the DOP value of the BDS system is larger than that of the GPS system,especially in GEO and IGSO to cover the area,BDS navigation and positioning performance is poor,in some areas BDS can not provide the realization of navigation and positioning services.