EUREF Related Activities in the Czech Republic 2004 - 2005 National Report

摘要

The densification process is reported and described in (Kostelecky et al., 2003). Since 1995 national reference frame has been densified in two parallel ways. The first densification, carried out by the Land Survey Office, is called "selective maintenance" and is aimed to GPS user community. It is based on the national GPS reference network DOPNUL. After the work is finished the total number of the new GPS stations will be 3,500 and the final density will be 1 station/24 km sq with an average spacing below 5 km. All these stations are identical with the tri-angulation stations of the national terrestrial triangulation network but they are equipped with a new monumentation and a special protection against damage. Until the end of 2004 the coordinates of 2399 stations were determined. The densification will be accomplished by the end of 2006. The coordinates are available in ETRS89 and in the official national user system S-JTSK.