基于几何关系模型观测值残差的周跳探测算法研究

Research on Algorithm of Cycle-slip Detection Based on the Observation Residual with the Model of Geometric Relationship

载波相位观测值的周跳探测一直是高精度全球卫星导航系统(glabal navigation satellite system,GNSS)数据处理领域中的重要研究问题。根据残差理论,提出了基于几何关系模型的观测值残差的周跳探测算法。对静态数据的算例分析表明:观测值残差能反映周跳,在探测过程中,由于融入了接收机坐标参数,发生周跳的残差与发生周跳的卫星一一对应。对于静态数据,该方法不仅能探测出周跳,还能探测出周跳值,修复周跳。

In the field of high-precision GNSS positing and navigation,cycle-slip detection is a very important object of study. The algorithm of cycle-slip detection based on the observation residual with the model of geometric relationship according to theory of residual is put forward. The analysis of the static data shows that： observation residuals can reflect the cycle-slip,in the process of detection,because of the coordinate parameters into the receiver,the occurrence of cycle-slip residuals one-to-one correspondence with the occurrence of cycle-slip satellite. For static data,this method can not only detect the cycle-slip,but also can detect the cycle-slip value and repair cycle-slip.