Assessment and Testing of GPS Kinematic Surveys using Precise Point Positioning Technique

Abstract

Abstract. Precise Point Positioning (PPP) technique, using single GPS receiver, has been used from several years especially in the static applications. Recently, there are many applications that rely on kinematic point positioning where the rover locations is determined using single GPS receiver in addition to the precise GPS satellite orbit and clock corrections that is developed and maintained by International Global Navigation Satellite System Service(IGS). In such environment, the GPS survey discrepancies should be addressed taken into consideration varying system dynamics, modeling algorithms, used software, receiver's types and other factors.This paper address the accuracy of GPS vehicle trajectory with high frequency data using kinematic point positioning technique and IGS data products. The study involves analyzing the kinematic GPS dual frequency carrier phase and pseudorange measurements utilizing the Real-Time Kinemtic LIB (RTKLIB) software and available data in a post processing mode. The receiver position utilizing point positioning technique has been verified and compared with the post processing relative kinematic trajectory solution. The PPP accuracy results using a low cost receiver were in the level of 10 cm for the horizontal components and 32 cm for the vertical component. The conclusions and further works are also included in the paper.