摘要
多路径误差分析是北斗卫星导航系统性能评估的一项重要内容。本文给出了一种新的计算3频多路径误差的方法,该方法只需对B1和B2载波相位观测值进行处理就能得到3个频率的伪距多路径误差。利用MGEX跟踪站的数据计算了BDS的多路径误差,从GPS和BDS多路径误差比较以及纬度、轨道和频率因素分析了BDS多路径误差的特性,结果表明,BDS多路径误差小于0.5 m,符合质量检查要求,其性能优于GPS卫星系统。
Analysis of multipath error is an important task to evaluate BDS performance. A method for calculating BDS triple - fre- quency multipath error is proposed. The method can get three frequency pseudo range muhipath errors when only the B1 and B2 carrier phase is processed. Using the MGEX tracking stations data, BDS muhipath errors are calculated. The difference between GPS and BDS muhipath and the effect of latitude, orbit and frequency for multipath is analyzed. The results show that BDS multipath error is less than 0.5m which satisfies quality checking. BDS performance is superior to GPS satellite system.
出处
《测绘与空间地理信息》
2015年第8期175-177,共3页
Geomatics & Spatial Information Technology
