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Artificial Satellites

The Journal of Space Research Centre of Polish Academy of Sciences

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Volume 49, Issue 1


Urban area GPS positioning accuracy using ASG-EUPOS POZGEO service as a function of session duration

Karol Dawidowicz / Grzegorz Krzan / Krzysztof Świątek
Published Online: 2014-03-25 | DOI: https://doi.org/10.2478/arsa-2014-0003


GNSS observations carried out in a network of Continuously Operating Reference Station (CORS) are a complex systems which offer post-processing as well as corrections sent in realtime. In Poland, such a system has been in operation since June 2008, known as the Polish Active Geodetic Network (ASG-EUPOS).

Usually the measurements performed in real time characterized lower accuracy than static measurements. For users who demand the highest precision results the post-processing services are provided.

The paper presents an analysis of the position determination accuracy using ASG-EUPOS POZGEO service. It is well known that the final accuracy is e.g. the measuring conditions, time of observations or number of measured frequencies dependent. We processed 4 consecutive days of GPS data to determine how the accuracy of derived positional coordinates depends on the length of the observing session, the characteristics of horizon visibility on points and the used in post-processing observations (L1 or L1+L2). The POZGEO results show that horizontal accuracies of about 1-2 cm and vertical accuracies of 4 cm are achievable provided 0.5 hours dual frequency GPS data. The accuracy clearly decreases for point measured under conditions of strongly limited satellite availability

Keywords : CORS; ASG-EUPOS; POZGEO; GNSS; static measurements


  • Bakuła M., Przestrzelski P. (2013): Technologia wiarygodnego pozycjonowania RTK GPS/GLONASS, Przegląd Geodezyjny, No 7: 3-9.Google Scholar

  • Bosy J., Oruba A., Graszka W., Leończyk M., Ryczywolski M., (2008): ASG-EUPOS densification of EUREF Permanent Network on the territory of Poland. Reports on Geodesy, No. 2 (85): 105-112.Google Scholar

  • Dawidowicz K., (2012): GNSS satellite leveling using the ASG-EUPOS system services. Technical Sciences, No. 15(1): 35-48.Google Scholar

  • Eckle M. C., Snay R. A., Soler T., Cline M. W., Mader G. L. (2001): Accuracy of GPSderived relative positions as a function of interstation distance and observing-session duration. Journal of Geodesy, Vol. 75: 633-640.CrossrefGoogle Scholar

  • Edwards S. J., Clarke P. J., Penna N. T., Goebell S. (2010): An examination of network RTK GPS services in Great Britain. Survey Review, No. 42(316): 107-121.Web of ScienceGoogle Scholar

  • El-Mowafy A. (2011): Analysis of web-based GNSS post-processing services for static and kinematic positioning using short data spans. Survey Review, No. 43(323): 535-549.Web of ScienceGoogle Scholar

  • Erhu W., Hua Ch., Zhiguo A. (2006): VRS Virtual Observations Generation Algorithm. Journal of Global Positioning Systems, Vol. 5, No. 1-2: 76-81.Google Scholar

  • Euler H.J., Keenan C.R., Zebhauser B.E. Wübbena G. (2001): Study of a Simplified Approach in Utilizing Information from Permanent Reference Station Arrays. Proc. ION GPS 2001, Salt Lake City.Google Scholar

  • Figurski M., Kamiński P., Kroszyński K., Szafranek K. (2009): ASG-EUPOS monitoring with referemce to EPN. Artificial satellites, Vol. 44, no. 3: 85-04.Google Scholar

  • Figurski M., Bogusz J., Bosy J., Kontny B., Krankowski A., Wielgosz P.(2011): „ASG+”: project for improving Polish multifunctional precise satellite positioning system. Reports on Geodesy, No 2(91): 51-58.Google Scholar

  • Hadaś J., Bosy J. (2009): Niwelacja satelitarna GNSS z wykorzystaniem serwisu NAWGEO system ASG-EUPOS. Acta Sci. Pol., Geodesia et Descripto Terrarum, No. 8(2): 53-66.Google Scholar

  • Kadaj R. (2010): Application of Schreiber’s type difference observation system for elaboration of a session of static GPS measurements; Biuletyn Wojskowej Akademi Technicznej, Vol. LIX, No. 2 (658): 85-106.Google Scholar

  • Kowalczyk K., Tymoszczyk T. (2012): Opracowanie trójwymiarowego modelu dna stawu w aplikacji SURFER przy użyciu danych z pomiaru GPS RTK. Zeszyty Naukowe Politechniki Rzeszowskie, No. 283(59): 197-206.Google Scholar

  • Kudrys J., Krzyżek R. (2011): Analysis of Coordinates Time Series Obtained Using the NAWGEO Service of the ASG-EUPOS System. Geomatics and Environmental Engineering, Vol. 5 No. 4: 39-47.Google Scholar

  • Snay R. A., Soler T. (2008): Continuously Operating Reference Station (CORS): History, Applications, and Future Enhancements. Journal of Surveying Engineering, Vol. 134, No. 4: 95-104.Google Scholar

  • Wanninger L. (1997): Real-Time Differential GPS-Error Modeling in regional Reference Stations Networks. Proc. IAG Symp 118, Rio de Janerio, 86-92.Google Scholar

  • Wanninger L. (2004): Introduction to Network RTK. Paper presented at the International Association to Geodesy meeting, Working Group 4.5.1: Network RTK, Dresden, Germany, available at: http://www.wasoft.de/e/iagwg451/intro/introduction.html.Google Scholar

  • Wegener V. and Wanninger L. (2005): Communication Options for Network RTK. International Association of Geodesy. Working Group 4.5.1: Network RTK. Available at: http://www.network-rtk.info/wegener/communication.html.Google Scholar

  • WiśniewskiB., Bruniecki K., Moszyński M. (2013): Evaluation of RTKLIB's Positioning Accuracy Using low-cost GNSS Receiver and ASG-EUPOS. The International Journal on Marine Navigation and Safety of Sea Transportation Vol 7, No 1: 79-85. Google Scholar

About the article

Published Online: 2014-03-25

Published in Print: 2014-03-01

Citation Information: Artificial Satellites, Volume 49, Issue 1, Pages 33–42, ISSN (Online) 2083-6104, ISSN (Print) 0208-841X, DOI: https://doi.org/10.2478/arsa-2014-0003.

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