Abstract: Based on the measured data in the airborne kinematic scene, this paper uses the open-source PRIDE PPP-AR software to construct a dual-frequency ionosphere-free combination (IF) using the pseudorange and carrier phase observations for kinematic precise point positioning (PPP) experiment, and it also compares the performance of a single BDS system and BDS/GNSS in airborne large kinematic positioning. The results show that the number of satellites, satellite geometry and position dilution of precision (PDOP) of the multi-system combination are superior. In a single system, the positioning accuracy in the plane (east (E), north (N) and up (U) )directions are improved by 10% and 12% respectively. In addition, this paper compares the solution results of the open-source software PRIDE PPP-AR with the commercial software WayPoint, the results show that the positioning accuracy of the former is improved by 46% and 36% in the E and U directions respectively, and the N direction is the most improved, nearly doubled. Therefore, PRIDE PPP-AR has higher solution accuracy and better solution performance.