摘要
介绍了全球导航卫星系统(GNSS)以及GPS现代化方面的进展,GLONASS的近况和GALILEO的现状及今后的发展;评述了如何减少电离层和对流层对无线电信号传播的延迟、多路径效应、接收机天线和卫星发射天线相位中心的变化、接收相位的模糊度等因素对卫星定位精度的影响;讨论了GPS单点精密定位(PPP)的优缺点。
Overview of the progress in GNSS, the modernization of GPS, recent situation of GLONASS and the development of GALILEO are presented. Comment on the nuisance effects in GNSS, such as ionospheric and tropospheric propagation delay, muhipath mitigation, receiver and satellite antenna phase centre variation, carrier phase ambiguity term are made, and how to reduce these effects is introduced.
出处
《大地测量与地球动力学》
CSCD
北大核心
2007年第5期1-4,共4页
Journal of Geodesy and Geodynamics
