THE CONFIDENCE EVALUATION FOR AIRBORNE GPS DATA

摘要

GPS kinematic carrier phase measurements can be used to determine seven dirnmension state and three attitude parameters of a motional carrier, such as an aircraft or a lowrnearth-orbit spacecraft,on which an antenna is installed to receive GPS signals. It is known rnfrom airborne GPS test results for photogrammetry in China since 1994 that GPS carrier rnphase measurements in a motional environment have acquired external accuracies of ± 7.9cm rnfor two dimensional positions and ± 18. 1cm for point heights. This paper describes airborne rnGPS carrier phase measurements with multireference stations and discusses how to evaluate rnthe confidence of GPS kinematic data.