Abstract:RTK positioning is a realtime kinematic positioning technology based on the carrier phase measurement. By resolving data from the base station and the rover, the position data of the rover can be obtained, which is more accurate than the traditional GPS positioning. In this paper, we propose ERTK (Edge realtime Kinematic), a realtime Kinematic carrier phase differential positioning method based on Edge computing. By transferring RTK resolving task to edge equipment, there is less requirementofhardware performance in the rover, and tthe cost of each rover can be reduced. Weimplement and test this ERTK, and theexperiments have proved that the ERTK positioning can achieve the same accuracy as the traditional RTK positioning at a lower hardware cost. In addition, when using GPS+BEIDOU GNSS data to resolve and positioning, compared with the GPS+GLONASS positioning, the Fix speed is greatly improved.