The influence of network structure on quality of satellite corrections for precise point positioning in GNSS

Abstract Network solution and user solution for precise point positioning in global navigation satellite systems are considered in the study. GPS ionosphere-free observation model with decoupled clocks is used for applying the procedure of ambiguity resolution of phase measurements. Four different variants of network solution based on European stations from a network of International GNSS service are considered. The other two variants of network solution are based on stations from a network of Russian satellite based augmentation system. Six investigated variants of network solution are varied in number of stations, total area, receiver types, configuration and measurements quality. Network products computed in different variants of network solution are then used for the user solution with applying the procedure of ambiguity resolution of phase measurements. The influence of network structure on accuracy and convergence time of precise point positioning with ambiguity resolution of phase measurements is analyzed. The properties of network structure are listed and described. Obtained precise point positioning results are averaged and discussed.