Abstract:As the real-time ionospheric delay grid correct information of the Beidou wide area difference system is calculated based on pseudo-range observation and phase observation with higher observation accuracy, so this paper presents an ionospheric delay corrections algorithm based on carrier phase and pseudo-range combined observations. The experiment is carried out using the GPS data of land network to validate the algorithm. The results show that ionospheric delay corrections based on the new algorithm are smoother, more stable, and better than the pseudo-range observations. The mean inner precision of ionospheric delay grids is improved by 30.2%, and the mean external precision is improved 27.8%.
FANG Chenghe,CHEN Junping,LAN Xiaoqi et al. Research of Real-Time Ionospheric Delay Grid Correction Algorithm Based on Pseudo-Range and Phase Observation[J]. jgg, 2018, 38(10): 1011-1015.