惯性信息辅助的载波相位模糊度求解算法

Inertial aided algorithm for carrier phase ambiguity resolution

针对卫星导航接收机载波相位精确定位中求解整周模糊度存在搜索空间大、时间长的不足,利用捷联惯性导航系统提供的惯性信息进行辅助,压缩模糊度搜索空间,实现模糊度的快速逼近与求解。实验结果表明,当采用单频GPS进行精密相对定位,使用SINS或者组合导航输出计算模糊度的初始值及其方差,该算法相对于传统算法更适合实时解算整周模糊度。

An inertial aided algorithm for carrier phase ambiguity resolution of GNSS is proposed to overcome the long time convergence shortcoming of current methods and to reduce the ambiguity searching space greatly.The performance of this approach is evaluated by real GPS accuracy relative positioning experiments.The experimental results show that the algorithm can realize the on-the-fly ambiguity resolution by using the output of SINS or GPS/SINS integrated navigation system to estimate the float ambiguity resolutions and their covariance matrix,thus better than traditional approaches.