Investigation of positioning accuracy of precise point positioning method depending on observation duration

In this research, the effect of Precise Point Positioning (PPP) method on the position accuracy of GNSS sites has been investigated. In order to improve the GNSS position accuracy, 24-hour RINEX data of 8 TUSAGA-Active stations was processed using the GAMIT/GLOBK. Data sets were obtained by dividing them into 2,4,6,8 and 12-hour parts with TEQC software. Then, all data sets were evaluated using web-based online CSRS-PPP software. By accepting the results of 24-hour data as correct, the RMSE were calculated from the results of the data sets obtained from CSRS-PPP. In addition, the relationships between measurement times and position accuracies were determined and the results obtained were compared with Eckl et al. (2001). The position accuracies obtained from the PPP solutions were found to be compatible with the position accuracy relations obtained in Eckl et al. (2001).