engleski

Latest efforts on new materialization of the Croatian terrestrial reference frame

Republic of Croatia has historically inherited horizontal coordinate reference system as a former member of Austrian-Hungarian Monarchy (1901) colloquially called “HDKS”, “Hermannskögel” or “HR1901”. In 2004, Republic of Croatia has adopted a new horizontal reference system called “Croatian Terrestrial Reference System 1996” as realization of ETRS89. On 9th December 2008, Croatian State Geodetic Administration (CSGA) introduced Croatian Positioning System - CROPOS to official public use. CROPOS represents a network of 30 GNSS CORS evenly distributed over the territory of Croatia. Since the establishment of CROPOS, five years have passed. Initial and also the last adjustment CROPOS network was carried out in 2008 using only seven 24h session data in GPS Week 1503 (ETRF2000 R05 ; e2008.83). In the recent period there have been significant changes - CSGA signed agreements on the exchange of CORS data of national positioning systems of neighbouring countries: Slovenia (SIGNAL), Hungary (GNSSnet.hu), Montenegro (MontePOS), Federation of Bosnia and Herzegovina (FBiHPOS) and Republika Srpska (SRPOS). This paper presents the preliminary results towards the new materialization of the Croatian terrestrial reference frame based on combined solution of CROPOS and positioning systems of neighbouring countries.

Adriatic microplate; absolute comparison; combined networked solution; CROPOS; Euler pole; geodynamics; long-term stability; velocity models

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