Evaluation of GPS Precise Point Positioning for Geoinformatics Community

摘要

Precise Geodetic GPS applications has evolved during the last two decades as the GPS processing and analysis techniques become more robotics and complicated. These progresses cover both the traditional relative positioning methods where more than one receiver are used simultaneously and the single positioning technique. In this study, GPS Precise Point Positioning (PPP) method, that does not require data from any other GPS receiver, was tested and evaluated through various computations environments. The un-differenced dual-frequency pseudo range and carrier phase observations were downloaded from one permanent international GNSS Service (IGS) station and one permanent CORS station. The GPS data were processed using various IGS orbit data in a post-processing manner using the ESA/UPC GNSS-Lab (gLAB) software. The results for various observations scenarios of the PPP solutions were investigated and analyzed. The conclusion and suggested future works are outlined in the research.