Precise Point Positioning and Differential Solutions by Online GNSS Calculation Tools and RTKLIB: A Comparative Study
- 1 University Iba Der Thiam of Thies, Thies, Senegal
- 2 University Iba Der Thiam of Thies, Thies, Senegal
- 3 Ecole Superieure des Geometres et Topographes, Le Mans, France
Abstract
The recent advances in GNSS positioning of the recent decades have been possible by the development of increasingly efficient software and online cal culation tools. The differences between these online PPP calculation tools result in a different level of performance. Our study shows that for 24-hour or 6-hour observation time, the Canadian Spatial Reference System for PPP (CSRS-PPP), CenterPoint RTX Post-Processing (RTX), Magic/GNSS, Institut Geographique National -PPP (IGN-PPP) and RTKLIB tools have almost sim ilar level of performance with International Terrestrial Reference Frame (IT RF) solutions considered as reference solution. Average deviations on the three components X, Y and Z for the different tools compared to ITRF solutions do not exceed 1 cm. However, the CSRS-PPP tool gives deviations of less than 5 mm. Calculations from the observations of 2 h and 1 h show that the RTX and CSRS-PPP tools keep deviations similar to those obtained with 24 h and 6 h, while RTKLIB and IGN-PPP give deviations exceeding 6 cm and sometimes failures of some calculations for IGN-PPP.
- Duquenne, F., Botton, S., Peyret, F., Bétaille, D. and Willis, P. (2005) GPS: Localisation et navigation par satellites. 2e édition revue et augmenté. Hermes Lavoisier, Paris.
- Santerre, R. (2015) PPP-GNSS: Principe et Nouveautés. Colloque CIDCO 2015, Québec, 18-19 June 2015, 27-28.
- Li, X., Li, X., Liu, G., et al. (2019) Triple-Frequency PPP ambiguity Resolution with Multi-Constellation GNSS: BDS and Galileo. Journal of Geodesy, 93, 1105-1122. https://doi.org/10.1007/s00190-019-01229-x
- Jin, S., Wang, Q. and Dardanelli, G. (2022) A Review on Multi-GNSS for Earth Observation and Emerging Applications. Remote Sensing, 14, Article No. 3930. https://doi.org/10.3390/rs14163930
- Shi, J. (2012) Precise Point Positioning Integer Ambiguity Resolution with Decoupled Clocks. University of Calgary, Calgary. http://hdl.handle.net/11023/365
- Laurichesse, D., Mercier, F., Berthias, J.-P., Broca, P. and Cerri, L. (2009) Interger Ambiguity Resolution on Undifferenced GPS Phase Measurements and Its Application to PPP and Satellite Precise Orbit Determination. Navigation, 56, 135-149. https://doi.org/10.1002/j.2161-4296.2009.tb01750.x
- Mercier, F. and Laurichesse, D. (2009) Receiver Positioning with Zero-Difference Integer Ambiguity Fixing. Geophysical Research Abstracts, 11, EGU2009-12769.
- Morel, L., Fund, F., Legros, R., Durand, S. and Flacelière, B. (2014) PPP, la maturité? Revue XYZ, No. 138, 42-50.
- Güneş, Ö. and Demir, D.Ö. (2022) Comparing Results of Online GNSS Services: A Case Study from Turkey. Survey Review, 54, 163-171. https://doi.org/10.1080/00396265.2021.1893470
- Bilgen, B., Bulbul, S. and Inal, C. (2022) Statistical Comparison on Accuracies of Web-Based Online PPP Services. Journal of Surveying Engineering, 148, Article ID: 04022009. https://doi.org/10.1061/(ASCE)SU.1943-5428.0000403
- Glaner, M. F. (2022). Towards Instantaneous PPP Convergence Using Multiple GNSS Signals. Technische Universität Wien, Vienna.
- Lie, T., Wang, J. and Laurichesse, D. (2013) Modeling and Quality Control for Reliable Precise Point Positioning Integer Ambiguity Resolution with GNSS Modernization. GPS Solutions, 18, 429-442. https://doi.org/10.1007/s10291-013-0342-8
- Grinter, T. and Roberts, C. (2011) Precise Point Positioning: Where Are We Now? IGNSS Symposium 2011, Sydney, 15-17 November 2011.