Application of High Precision GPS-BD RTK Differential Positioning in UAV

Satellite navigation is a method to determine the position (longitude, latitude and altitude) and time of a point on the earth by using the global space positioning satellite system, accurately. This paper reports on localization system structure, high precision positioning principle and error elimination method. For the real-time kinematic (RTK) positioning technology, it is necessary to work together between the reference station and the mobile station. In the process of RTK Positioning, the observation data (pseudo range observation value, phase observation value) and position data of the reference station are obtained in real time, and then the signal fusion processing is done. In addition, the communication link is studied in depth. The proposed positioning method shows great potential for UAVs in various fields.