卫星信号和数据质量监测算法研究

结合卫星导航系统的实际应用,对卫星播发的导航信号和观测数据的质量监测算法进行了研究,可以满足卫星定轨和用户定位精度的要求。文中首先分析了卫星信号出现异常的原因,并有针对性地给出了用于卫星信号质量监测的宽窄相关伪距比较和码-载偏离度计算方法,然后又对用户伪距和载波相位这两个主要测量值的数据突变问题的实时监测方法展开了分析和探讨,最后进行了仿真研究。结果表明,这些算法是可行、实用并且有效的。

Research on Signal and Data Quality Monitoring Algorithm of GNSS

Base on the available requirement of the Global Navigation Satellite System,the signal and data quality monitoring algorithm are studied in this paper in order to satisfy the precise position of satellites and users.Firstly,the wide-narrow correlator technique and code-carrier divergence test method are given according to the different reasons of satellite signal abnormity,and then how to find out the abnormal change of Pseudorange and carrier is analyzed.At last,a computer simulation example is given.The result shows that this algorithm is feasible,practical and effective.