Abstract:This paper investigates the model and algorithm of the single/dual-frequency GPS/BDS/Galileo mixed double-difference relative positioning. We deduce the model and algorithm. The experiment selects zero short baseline data for testing. The positioning accuracy and ambiguity fixed speed of the GPS-only, GPS/BDS standard double difference, GPS/BDS mixed double difference, GPS/Galileo mixed double difference and GPS/BDS/Galileo mixed double difference are analyzed. Compared with the GPS-only and GPS/BDS standard double difference solution model, the experimental results show that the three-system or dual-system mixed double difference model can improve the fixed rate of ambiguity and positioning accuracy effectively.
PU Yakun,YUAN Yunbin,DING Wenwu et al. GPS/BDS-2/Galileo Mixed Double Difference Relative Positioning Model Applied to Short Baseline Precise Positioning[J]. jgg, 2020, 40(1): 56-61.