8/29/2023 0 Comments Trimble business centre 5.0![]() Post-processing was conducted with the use of the GPS system, precise ephemeris, the adopted antenna correction model, and a zero-elevation mask. The antennas were located at similar heights precise height differences were determined by geometric levelling, both at the beginning and the end of the session. The research was conducted only within the global positioning system (GPS) system due to the compatibility of one of the receivers, and the experiment was based on a comparison of the height differences between four GNSS antennas located on the roof of a building: two permanent station antennas and two auxiliary points. The results of GNSS processing were referenced to direct geometric levelling outputs. For this purpose, height differences were determined using different and independent methods: EUREF Permanent Network (EPN) combined solutions, Precise Point Positioning (PPP), and the single baseline solution. ![]() In this paper, the results of research on the adequacy of the antenna phase centre corrections (PCC) variations are presented by analysing its component-the antennas’ phase centre offset (PCO). Changes of the antenna models on permanent global navigation satellite system (GNSS) stations can lead to jumps and discontinuities in the coordinate time series.
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