An overall adjustment method for relative corrections of master reference stations in the BDS/GNSS network RTK system

Abstract

We here address problems of nonunique paths and poor fault tolerance in the traditional shortest path transfer method and propose an overall adjustment method of relative corrections of master reference stations in BDS/GNSS Network RTK systems. Our method comprehensively considers the vector relationship of baseline error corrections, the baseline closure error of Delaunay triangulation and the interpolation relationship between stations to realize the one-time generation, obtaining all relative error corrections of the master reference station in a network RTK system. The test results showed that our method can achieve a success rate of more than 95% and an incorrect rate of less than 0.01%. The error corrections, generated by the two methods, are verified and analysed by the positioning accuracy of the rover. The results show that the positioning accuracy of the method in this paper is improved by about 17% over the shortest path transfer method.