基于RTKLIB实时差分定位的BDS性能研究

Research on BDS performance based on RTKLIB real-time differential positioning

为研究北斗卫星导航系统(BDS)和全球定位系统(GPS)在实时动态差分定位中的性能差异,本文在澳大利亚、巴西、芬兰和中国境内共选取四条由国际GNSS服务(IGS)站构成长度不超过30 km的基线,利用精密定位开源程序包(RTKLIB)软件进行了BDS与GPS两种模式下载波相位实时差分定位,结果表明:BDS可利用卫星数量和实时差分定位稳定性在亚太地区优于GPS,在全球区域两者的差别不大;两种模式的实时差分定位精度十分相近,均能达到厘米级精度。

In order to study the performance difference between BeiDou navigation satellite system(BDS)and global positioning system(GPS)in real-time dynamic differential positioning,four baselines consisting of International GNSS service(IGS)stations were selected in Australia,Brazil,Finland and China.In this paper,four baselines consisting of international service stations with a length of up to 30 km were selected,and real-time differential positioning of the carrier phase in two modes,namely BDS and GPS were solved using RTKLIB software.It was verified that the real-time differential positioning accuracy of the two modes is very similar with centimeter-level accuracy.