北斗卫星导航系统双差网络RTK方法

针对北斗卫星导航系统常规实时动态差分(RTK)定位中,整周模糊度的快速解算和流动站位置信息的解算精度问题,该文研究了一种北斗卫星导航系统双频双差网络RTK方法,首先解算参考站网B1、B2载波相位整周模糊度,利用固定的参考站网载波相位整周模糊度计算参考站的观测误差,使用区域误差内插法计算流动站的综合误差影响,改正流动站的观测误差并进行流动站的整周模糊度解算,最后使用实测数据进行算法实验。实验结果表明,该文的方法可以利用北斗卫星导航系统双频观测数据实现网络RTK流动站的厘米级定位。

A method of BeiDou navigation satellite system double difference network real-time kinematic

Aiming at the problem of rapid solution of ambiguity and the precision of rover position in BeiDou navigation satellite system real-time kinematic(RTK),an algorithm of BeiDou navigation satellite system double difference network RTK was introduced in this paper.The ambiguities of B1 and B2 carrier phase between reference stations were fixed,and the bias of reference stations was calculated by the fixed ambiguities of carrier phase between reference stations.Then the combined bias interpolation method was used to calculate the combined bias,and the ambiguities of carrier phase of rover were fixed with removing the bias of rover by the combined bias.The test of algorithm was actualized by CORS data,and the results indicated that the BeiDou navigation satellite system network RTK could be realized and the centimetre level positioning accuracy was achieved by this algorithm.