Abstract
Abstract The principles of the new National System of Geodetic Coordinates are the result of analyses carried out by the study group of the Section of Geodetic Networks and the Section of Cartography Geodetic Committee of the Polish Academy of Sciences. As the basis of the new National System ot Geodetic Coordinates, the European Terrestrial Reference System (ETRF'89) and ellipsoid GRS-80 were adopted. Practical realisation of the new reference system took place in the Dept of Planetary Geodesy, Space Research Centre using GPS technique. In 1992 precise zero-order network EUREF-POL'92 containing eleven stations was established. In 1994 and 1995 its further densification (356 points) provided POLREF network which is practical realisation of ETRF'89 Reference System in Poland. The paper gives a survey of all works connected with establishing the new National Geodetic System in Poland.
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