高纬地区BDS-3/GPS/Galileo长基线单历元解算分析

Long Baseline Single Epoch Solution Analysis of BDS-3/GPS/Galileo in High Latitude Areas

分别进行了北半球高纬度地区BDS-3、BDS-3/GPS、BDS-3/GPS/Galileo长基线单历元解算实验。结果表明,高纬度地区BDS-3长基线单历元定位性能较优,定位精度可达厘米级,模糊度固定率可达91%以上;随着GPS和Galileo的加入,不仅改善了BDS-3单独定位的卫星可见数和PDOP值,还较大程度地提升了BDS-3单独定位的精度与模糊度固定率,水平最优精度优于1 cm,高程最优精度优于3 cm,模糊度固定率接近100%,可为今后高纬度地区的导航定位提供一些参考。

In this paper,we carried out BDS-3,BDS-3/GPS,BDS-3/GPS/Galileo long baseline single epoch solution experiments.The experimental results show that the BDS-3 long baseline single epoch positioning performance is better in high latitude areas,the positioning accuracy can reach centimeter level,and the ambiguity fixed rate can reach more than 91%.With the addition of GPS and Galileo,not only the number of visible satellites and PDOP values of BDS-3 independent positioning are improved,but also the accuracy and ambiguity fixed rate of BDS-3 independent positioning are greatly improved.The optimal horizontal accuracy is better than 1 cm,the optimal height accuracy is better than 3 cm,and the ambiguity fixed rate is close to 100%,which can provide some references for future navigation and positioning in high latitude areas.