GPS载波相位的周跳检测与修复分析

Analysis of Cycle Slips Detection and Reparation for GPS Carrier Phase

本文首先分析了宽巷载波与窄巷伪距法和电离层残差法检测和修复周跳的原理,结合宽巷载波与窄巷伪距法能够检测和修复较大的周跳,但无法检测同时发生在载波L1、L2上相同数量的周跳,而电离层残差法仅能检测出小周跳的特点,提出了将宽巷载波与窄巷伪距法和电离层残差法相结合的复合检测方法。首先由宽巷载波与窄巷伪距法检测和修复周跳,然后再由电离层残差法进行周跳检测和修复。仿真结果表明该复合方法能够有效地检测和修复GPS载波相位的周跳。

The principle of the wide lane phase and narrow pseudo-range method and the traditional ionosphere residual method is analyzed in this paper. The larger cycle slip can be detected and repaired combining the wide lane phase and narrow pseudo-range method, but the same slips occurred on L1 carrier and L2 carrier can not be detected. While only separate less cycle slips which limits the application can be detected by the ionosphere residual method, so a comprehensive method is improved to detect and repair cycle slips. The simulation results show that the combined method can effectively deal with the cycle slips in the actual circumstance.