DBPapers
DOI: 10.5593/SGEM2014/B22/S9.013

AVAILABILITY CHARACTERISTICS DETERMINATION OF FKP AND VRS TECHNIQUES OF ASG-EUPOS SYSTEM

E. Sitnik, B. Oszczak, C. Specht
Wednesday 1 October 2014 by Libadmin2014

References: 14th International Multidisciplinary Scientific GeoConference SGEM 2014, www.sgem.org, SGEM2014 Conference Proceedings, ISBN 978-619-7105-11-7 / ISSN 1314-2704, June 19-25, 2014, Book 2, Vol. 2, 97-104 pp

ABSTRACT
Network-based ASG-EUPOS reference ground stations system, known as the Polish Active Geodetic Network, has been in operation since 2008. NAWGEO is ASG-EUPOS service and it provides differential corrections for Real Time Kinematic (RTK) method of positioning. In this publication FKP (in German: Flächen−Korrektur−Parameter) and VRS (Virtual Reference Station) techniques were used for the availability characteristics analysis for DGPS/RTK methods of positioning. This characteristics were determined by using semi-Markov processes. Two dualfrequency Ashtech Z-Extreme GPS receivers were used for DGPS/RTK methods via GPRS teletransmission data system. About 1.5 million point coordinates were collected. This data were gathered with 1 second interval. A few accuracy thresholds for semi- Markov processes were arbitrary chosen. The results were compared and presented in this publication. On the basis of the performed tests it is shown that the VRS technique is better than FKP technique.

Keywords: Availability characteristics, semi-Markov processes, DGPS, RTK