DBPapers
DOI: 10.5593/sgem2012/s07.v2004

AZIMUTH DETERMINATION AND ANALYSIS ON THE REPEAT STATIONS NETWORK IN CROATIA

D. SUGAR, T. BASIC, Z. BACIC
Wednesday 1 August 2012 by Libadmin2012

References: 12th International Multidisciplinary Scientific GeoConference, www.sgem.org, SGEM2012 Conference Proceedings/ ISSN 1314-2704, June 17-23, 2012, Vol. 2, 693 - 700 pp

ABSTRACT

The continental part of the CGRSN (Croatian Geomagnetic Repeat Stations Network)
network consisting of 8 repeat stations was established and surveyed in 2004. The
network has reached its actual shape in 2008 after the setup of two additional repeat
stations on the island of Lošinj and Palagruža. Due to the usage of different
instrumentation and coordinate determination methodology during the network setup in
2004 and 2008, as well as due to the heterogeneity of the realization of the CSCS,
within the survey in 2010 the CGRSN network was observed with GNSS (Global
Navigation Satellite System) receivers Trimble R8 and Topcon Hyper PRO and
coordinates were determined with GPPS (Geodetic Precision Positioning Service)
service of the CROPOS (CROatian POsitiong System) system. The coordinate
transformation based on the T7D model as well as the transformation using unique
transformation parameters were carried out and subsequently the azimuth values were
calculated from the obtained coordinates. The comprehensive analysis of the results was
presented and the corrections for the transition of the azimuth values determined in
heterogeneous realization of the national CSCS to the homogeneous and global
ETRF2000 were given.

Keywords: repeat stations network, declination, azimuth, GNSS, coordinates
transformation