Browsing by Subject "serwis NAWGEO"

Now showing 1 - 3 of 3

Access status: Open Access ,
Analysis of accuracy of determination of eccentric point coordinates of the KRAW permanent geodetic station in RTK GPS measuring mode with the application of the NAWGEO service of the ASG-EUPOS system
(2012) Krzyżek, Robert; Skorupa, Bogdan
A short analysis of the behaviour of the spatial coordinates of eccentric points KRA8 and KRA9 of the KRAW permanent geodesic station in the ASG EUPOS system over time was conducted. Measurements were conducted on eccentric points in real time in RTK GPS mode, over several measuring cydes. Two GPS receivers of various manufacturers were applied for research measurements. Obtained measurement results - spatial coordinates - were related to values accepted as error free, obtained from the ETRV 2000 measuring campaign.
Access status: Open Access ,
Analysis of coordinates time series obtained using the NAWGEO service of the ASG-EUPOS system
(2011) Kudrys, Jacek; Krzyżek, Robert
The NAWGEO service of the ASG-EUPOS system is practically the most often used by geodesists. The accuracies of determining coordinates using the NAWGEO service as declared on ASG-EUPOS internet pages are 3 cm horizontally and 5 cm vertically. In this work, on the basis of conducted measuring tests executed in optimal conditions, the authors verify the capabilities for determining point coordinates with a given accuracy depending on the method of measurement and the type of corrections used. The presented results confirm the capability for obtaining high accuracies of determined coordinates in case of optimal measuring conditions. In the case of unfavorable measuring conditions, the achieved accuracy (repeatability) of determining coordinates is significantly worse.
Access status: Open Access ,
Analysis of RTN measurement results referring to ASG-EUPOS network
(2010) Uznański, Andrzej
The paper presents the analysis results of the precision and accuracy of the coordinates of 27 points determined in 149 series of the RTN measurements with reference to the NAWGEO service of the ASG-EUPOS network system. A total of 4,475 positions of these points were analysed. The basis for the analysis of point coordinates from the RTN measurements were the results of the GPS static surveying, precise tachymetric surveying, as well as the precise levelling. The precision of the horizontal coordinates of the points from the RTN measurements has to be assessed as high. The vast majority of the results was characterized by the precision of the horizontal coordinates which was not worse than 5 mm. The accuracy of surveying results was lower, but generally fell within the ranges specified on the website of the ASG-EUPOS network system.