ALGORITHM FOR GENERATION OF GPS VIRTUAL PHASE OBSERVATION BASED ON VRS
Zhu Chao 1,2) ;Gao Chengfa 1) ;Zhao Yi 2,3) ; and Peng Hui 1)
1) Transportation College of Southeast University，Nanjing 2100962) School of Instrument Science and Engineering，Nanjing 2100963) European-Asian Educational & Application Development Center (SEU China) of Galileo，Nanjing 210096
Abstract The key technique of network differential positioning based on virtual reference station，the algorithm the generation of virtual phase observation and differential corrections was proposed. At the same time，in order to evaluate the feasibility and location precision of the proposed technique，field tests were caried out based on the measured data of a continuous operating reference station network and by use of selfdeveloped positioning software SeuVRS1.0. The results of test which conducted using regional networks demonstrate that distancedependent errors can be effectively modeled between reference stations.Within the network，real time kinematic positioning based on virtual reference station can be achieved,with better than 4 cm accuracy in horizontal position.
