多普勒观测量在GNSS数据处理中的应用与效果评估

The application and assessment of Doppler measurements in data processing of GNSS

本文针对多普勒观测量的自身特点,介绍了三种其应用于北斗数据处理的方法,它们分别是基于多普勒观测量的周跳检测方法、基于多普勒观测量的测速方法、利用多普勒观测量辅助单点定位解算的方法,并基于实测数据对以上三种方法进行了性能评估,结果显示:基于北斗多普勒观测量的周跳探测方法能成功探测出载波相位观测值中的周跳现象;北斗多普勒测速的精度可以达到cm/s的量级;利用北斗多普勒观测量辅助单点定位解算确实对解算精度有大幅提升。

In this paper, we preset three data processing methods of the BeiDou Doppler observations based on its own characteristics. They are cycle-slip detection method, velocity determination method and Doppler-aided algorithm for BeiDou single point positioning, respectively. We carry out the performance assessment of the three methods based on real GNSS observations. The results show that： the cycle-slip detection method based on BeiDou Doppler observations can detect cycle-slips in carrier phase observations successfully, the velocity determination method based on BeiDou Doppler observations can get an accuracy of cm/s level and Doppler-aided algorithm for BeiDou single point positioning will significantly improve the positioning accuracy of traditional SPP method.