Beidou Carrier Phase Difference Reliability Improvement Method Applied to Medium and Large Fixed Wing UAV in Complex Environment

This paper aims at the problem of how to obtain the position information of self-height accuracy in real time when the medium and large UAV is affected by complex electromagnetic environment, high dynamics, large angle, high jitter and other factors in the process of task execution. Based on the Beidou carrier phase difference method, a method of integrity monitoring and a posteriori weight dynamic allocation is proposed to ensure the reliability of positioning results in complex environments. It is verified by simulation analysis and using the actual flight data of a certain UA V. The verification results show that the method introduced in this paper can make the UA V maintain high-precision and stable positioning in only 9 hours of mission.