为探究北斗卫星导航系统全球组网成功后的实际定位性能,对卫星连续跟踪情况、GDOP和PDOP值以及4 h PPP坐标解的残差以及北斗2号(BDS2)星座和北斗2/3(BDS2/3)组合星座进行研究分析。该研究肯定了北斗的定位性能,并认为完整的全星座北斗...为探究北斗卫星导航系统全球组网成功后的实际定位性能,对卫星连续跟踪情况、GDOP和PDOP值以及4 h PPP坐标解的残差以及北斗2号(BDS2)星座和北斗2/3(BDS2/3)组合星座进行研究分析。该研究肯定了北斗的定位性能,并认为完整的全星座北斗卫星系统的定位性能将会优于GPS卫星系统。展开更多
Scheme of positioning constellation would greatly influence the positioning performance. In this paper, a GEO/HEO hybrid constellation with 3 HEO satellites deployed in 3 orbits and 3 GEO satellites for regional posit...Scheme of positioning constellation would greatly influence the positioning performance. In this paper, a GEO/HEO hybrid constellation with 3 HEO satellites deployed in 3 orbits and 3 GEO satellites for regional positioning is presented. Firstly, elements for 3 GEO and 3 HEO are optimized from regional visibility for the selected region of interest. Secondly, positioning performance is provided through GDOP(geometric dilution of precision) and PDOP(positional dilution of precision). Simulation results show that similar accuracy with GPS can be gained by this constellation.展开更多
文摘Scheme of positioning constellation would greatly influence the positioning performance. In this paper, a GEO/HEO hybrid constellation with 3 HEO satellites deployed in 3 orbits and 3 GEO satellites for regional positioning is presented. Firstly, elements for 3 GEO and 3 HEO are optimized from regional visibility for the selected region of interest. Secondly, positioning performance is provided through GDOP(geometric dilution of precision) and PDOP(positional dilution of precision). Simulation results show that similar accuracy with GPS can be gained by this constellation.
