不同采样率对GPS原始相位观测值周跳探测方法的影响及其效果比较

Influence to detecting approaches for cycle slips of GPS original carrier phase by different interval and comparison of their effects

在GPS精密定位中,载波相位观测值周跳探测和修复的好坏程度将直接影响定位结果的精度,特别是实时动态定位(RTK)。当接收机采用不同采样率时,由于相位观测值所组成的序列函数收敛性将发生变化,各种周跳探测方法的能力也将发生改变。综述了几种常规的周跳探测方法,并对其特点与局限性进行了分析,然后对构造出的周跳检验量进行了比较,在此基础上通过大量算例探讨了在不同采样率下其探测周跳的能力和适用度,最后得出了一些有益的结论。

In the Precise positioning of GPS, whether the detection and reparation for cycle slips of carrier phase is feasible or not it will affect the precision of positioning results directly, especially in the RTK. Due to different interval setting in the GPS receiver, the astringency of sequenced functions com- posed of carrier phase observations will change, which may make the ability of technique of detecting cy- cle slips change simultaneity. The article summarizes several general techniques as detecting original slips. And it analyses their characteristics with its limitations. Then compare the constructed checkout data of cycle slips. With this understanding, we find abilities and applicability of these techniques in the conditions of different interval using abundant figures, and obtain some helpful conclusions finally.