BDS/GPS非差误差改正数的实时动态定位方法

针对我国地区观测数据的实验定位结果精度问题,该文提出BDS/GPS非差误差改正数的实时动态定位方法,研究了BDS/GPS单参考站非差实时动态定位算法模型,流动站使用非差误差改正数,不需要进行双差观测值的组合。参考站将非差误差改正数传递给流动站,对流动站的观测值进行误差改正,可以直接固定流动站的模糊度。实验表明:在我国南方地区BDS精度要优于GPS,而在北方地区,BDS/GPS定位精度和GPS定位精度明显优于BDS。并且与单系统相比,组合系统的可视卫星数明显增加,改善了卫星空间几何分布结构,从而提高了导航定位的可用性和精度。

The method of BDS/GPS real time kinematic non-difference error correction

Aiming at the problem that the experimental positioning results of regional observation data in our country was low accuracy,this paper proposed a method of BDS/GPS real-time kinematic nondifference error correction.A non-difference real time kinematic algorithm model for BDS/GPS single reference station was studied in this paper.Rover used the non-difference error correction,and the double difference observations were not combined.The non-difference error corrections of reference station were transmitted to the rover.The observation of rover was corrected by the non-difference error correction of the reference station,and ambiguity could be directly fixed.The results showed that the accuracy of BDS was better than GPS in southern China.However,the accuracy of BDS/GPS combined positioning and GPS positioning were significantly better than the BDS in the northern region.Because of more visible satellites and better spatial geometric structure of double system,the availability and accuracy of positioning were improved by combination of systems comparing to single system.