一种改正伪距多路径误差的北斗三频周跳探测与修复方法

A New Method for BDS Triple-Frequency Cycle-Slip Detection and Repair with Multipath Correction in Considering

使用北斗三频观测值提取伪距多路径误差。分析表明,北斗伪距多路径误差达到m级,且变化较快,不能通过历元间差分完全消除,会对周跳探测及修复产生影响。提出一种改正伪距多路径误差的北斗三频周跳探测与修复新方法,能有效控制伪距多路径误差的影响,提高周跳修复的成功率。

In this paper the pseudorange multipath errors are extracted by using triple frequency data broadcasted by BDS. The results indicate that the multipath errors of pseudorange are at the meter level and that they change quickly. The multipath errors remaining after and between epoch difference can affect cycle-slip detect and repair. A new method for BDS triple-frequency cycle-slip detection and repair, which considers multipath correction, is introduced. Experiments are carried out to assess the performance of the new method. The results show that the method can control the impact of multipath errors and improve the success rate of cycle-slip repair.