BDS/GPS组合单历元基线解算方法

阐述了BDS/GPS单历元解算函数模型的相关理论,并进行了相应的公式推导。在此基础上,利用基于正则化的载波相位解算模型,解算宽巷模糊度。首先将BDS卫星宽巷模糊度值作为约束固定出IGSO和MEO卫星的模糊度;然后再将IGSO和MEO卫星模糊度值作为约束来固定GEO卫星模糊度。通过实测数据对该方法进行测试和分析,结果表明:BDS/GPS组合系统单历元宽巷模糊度成功率为100%;基频模糊度成功率90%以上;N、E、U方向定位精度达到了毫米至厘米级。

A Method Research of Single-Epoch Baseline Solution Based on BDS/GPS

The related theory of BDS/GPS function model about single-epoch resolution is expounded in this paper.The corresponding formula is deduced.On this basis,the wide lane ambiguity is calculated using carrier phase calculating model based on regularization solution.First,the integer ambiguity of IGSO and MEO is fixed with the wide lane ambiguity of BDS,which is a constraint to fix the integer ambiguity of GEO.By test and analysis of the measured data with this method,the results show that the success rate of fixing wide lane ambiguity in single epoch is 100％ in BDS/GPS integrated system and the success rate of fundamental frequency ambiguity is more than 90％,even positioning accuracy has reached the millimeter to centimeter level in N,E,U directions.