Assessing the performance of BDS-3 for multi-GNSS static and kinematic PPP-AR |
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| Institution: | 1. Necmettin Erbakan University, Faculty of Engineering, Department of Geomatics Engineering, Konya, Turkey;2. Konya Technical University, Faculty of Engineering and Natural Sciences, Geomatics Engineering Department, Konya, Turkey;3. College of Geology Engineering and Geomatics, Chang’an University, Xi’an 710054, China;4. Shanghai Astronomical Observatory, Chinese Academy of Science, Shanghai 200030, China |
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| Abstract: | As of 2021, a total of four different GNSS constellations – namely, GPS, GLONASS, Galileo, and BDS-3 – can be used with Full Operational Capability (FOC). In this work, the contribution of BDS-3 FOC to GPS + GLONASS + Galileo (GRE) PPP-AR is investigated, considering the three different cut-off angles (7°, 30°, and 45°) and different lengths of static observation sessions (24-, 12-, 6-, 3-, 1-, 0.5-, 0.25-hour). The data of 31 IGS-MGEX stations is processed with GRE PPP-AR and GREC3 (GPS + GLONASS (using float mode) + Galileo + BDS-3) PPP-AR modes. The results showed that BDS-3 degraded the horizontal (except for 24-h sessions) and vertical accuracy of static GRE PPP-AR solutions regardless of the elevation cutoff angle and observation time. The kinematic results showed that BDS-3 significantly contributed to the accuracy of GRE kinematic PPP-AR for 30° and 45° cutoff angles. The convergence time analysis showed that BDS-3 only contributes to GRE kinematic PPP-AR for the vertical component. |
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| Keywords: | Ambiguity resolution BDS-3 PPP IGS-MGEX |
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