摘要
针对北斗三号(BDS-3)卫星新频率与其他导航系统兼容频率组合定位性能,分析了BDS-3卫星B1C、B2a与GPS、Galileo与QZSS 3个系统兼容频率的伪距单点定位精度。经研究发现,当前情况下BDS-3卫星数、位置精度强弱度较差,但是其他系统的加入有效改善了这两个方面,BDS-3卫星B1C频率伪距单点定位精度优于B2a,B1C、B2a与其他系统兼容频率组合定位精度相比BDS-3单系统有了较大提升,同时发现B1C与其他系统兼容频率组合伪距单点定位精度优于B2a与相同系统兼容频率组合定位精度,为今后BDS-3卫星定位性能分析提供一定的借鉴。
The integration of compatible frequency positioning of BDS-3 satellites with other navigation systems is of great potential.This article analyses the accuracy of compatible frequency pseudo-range single-point positioning of three systems including BDS-3 satellites B1C,B2a and GPS,and Galileo and QZSS.It is found that BDS-3 has few satellites and poor PDOP.The problems can be solved by integration BDS-3 with other systems.The single-point positioning accuracy of BDS-3 satellite B1C frequency pseudo-range is higher than that of B2a.However,the integrated compatible frequency positioning of B1C or B2a with other navigation systems improves positioning accuracy more significantly than sing-point positioning of BDS-3.For a given integrated navigation system,BIC works better than B2a in terms of positioning accuracy.This work is helpful to the operation analysis of BDS-3 satellite positioning.
作者
张澄
ZHANG Cheng(Basic Surveying and Mapping Institute of Qinghai Province,Xining 810000,China)
出处
《地理信息世界》
2020年第4期135-138,共4页
Geomatics World
基金
湖北省自然科学基金项目(2015CFA143)资助。
