卫星导航系统服务性能分析与试验验证

摘要

Beidou satellite navigation system has been established a regional system serving navigation users around the China area .Interoperability is the trend for satellite navigation systems .To promote reference for navigation satellite selection for navigation users ,the performance of each navigation satellite system is analyzed in the article .The development and current status of the three operational Global Navigation Satellite Systems and definition of GNSS space signal accuracy are illustrated .Combining related papers and publications ,the space signal accuracy of GPS/GLONASS and COM PASS are presented .It proves that the COMPASS provides positioning ,navigation and timing services as precise as GPS in the Asia‐Pacific area ,which is superior to GLONASS .%北斗卫星导航系统已成为服务于中国及其周边地区的区域系统，并成为在轨运行的三大卫星导航系统之一。兼容互操作是卫星导航系统的发展趋势，为方便导航用户选星的使用要求，分析三大卫星导航系统的服务性能，给出卫星导航系统服务性能指标及定义。结合国内外学者对卫星导航系统服务性能的研究，对GPS、GLONASS和COM PASS等三大卫星导航系统的空间信号精度进行分析。结果表明我国北斗卫星导航系统在服务范围内能够向用户提供与GPS系统相同精度的定位、授时服务，且服务精度优于GLONASS系统。