一种改进的六星选星法在BDS/GPS组合RTK中的应用

提出一种利用卫星高度角阈值进行选星的改进六星选星法。通过解算不同长度基线的BDS/GPS观测数据，比较不同选星策略在定位精度和解算效率方面的差异。结果显示，与传统不选星策略相比，改进六星选星法平面定位精度相当，高程方向定位精度平均提升40%，解算效率平均提升70%。

The Application of an Improved Six-Satellite Selection Algorithm on RTK Combined with BDS/GPS

In this paper, based on the satellite elevation angle threshold, an improved algorithm of selecting six satellites is proposed to solve the shortcomings of satellite selection. By comparing the BDS/GPS observations with different lengths of baseline, the difference between the positioning accuracy and the efficiency of the different selection strategies is analyzed and compared. The results show that the improvement of the positioning accuracy of the improved six-satellite selection algorithm in the elevation direction is 40% and the average of the solution time is 70%, and the plane positioning is quite accurate.