摘要
北斗卫星导航系统作为全球四大系统之中是唯一采用IGSO/GEO/MEO异构星座的导航系统。通过STK仿真分析IGSO/GEO/MEO星座和MEO星座的卫星可见数、位置精度衰减因子和定位精度等指标,确定IGSO/GEO卫星在单站和全球情况下对北斗星座导航性能的影响,给出IGSO/GEO卫星对北斗导航性能增强的区域。这对IGSO/GEO卫星应用于导航系统起到一定理论支撑作用。
BeiDou satellite navigation system is one of the world＇s four major systems which only use IGSO/GEO/MEO heterogeneous constellation.Index of number of visible satellites,PDOP and positioning accuracy about IGSO/GEO/MEO constellations and MEO constellations are analyzed with STK software in order to know the IGSO/GEO satellite impact on the BEIDOU constellation navigation performance at a single station and global situation.Beidou navigation performance enhancement area is given from the IGSO/GEO satellite.This is a certain theoretical support for the application of IGSO/GEO satellite in the navigation system.
出处
《全球定位系统》
CSCD
2016年第3期16-20,共5页
Gnss World of China
基金
国家自然科学基金(批准号:41374027)
