Imprint Publisher This internet offer is published by: Federal Agency for Cartography and Geodesy represented by president Prof. Dr. Steffen Schön Richard-Strauss-Allee 11 60598 Frankfurt am Main Germ

Sup­port­ing in­sti­tu­tions The following organisations supported the EUVN-DA project. Country Organisation Austria BEV - Bundesamt für Eich- und Vermessungswesen (Federal Office of Metrology and Sur

Links External related links of Information System EVRS CRS-EU - Information System for Coordinate Reference Systems in Europe EC - European Commission EUREF - Sub-Commission of IAG for European Refer

EUVN - European Vertical Reference Network The initial practical objective of the EUVN project is to unify different European height datums within few centimeters. In addition this project is to prepa

EUVN-DA In­tro­duc­tion EUVN-DA EUVN as starting point Project Target Related EUREF Resolutions EUVN-DA In 2003 the EUREF Technical Working Group (TWG) has launched the EUVN Densification Action to es

Da­ta sub­mis­sion EUVN-DA data requirements EUVN-DA data sheet Database overview EUVN-DA data requirements Site selection mean site separation: 50 - 100 km a UELN benchmark should be located within 1

Na­tion­al ref­er­ence frames and geoid mod­els It is a well-known fact that the national height systems in Europe refer to different datums and standards and therefore differ at the decimeter or mete

Da­ta anal­y­sis Levelling data GPS coordinates GPS / levelling height anomalies Statistics of the geoid comparisions Levelling data The submitted levelling data (geopotential differences or normal /

EVRF2000 (archived) The EVRS is realized by a certain adjustment of the United European Leveling Network (UELN). The data handling and adjustment are carried out at the UELN data and computing centre

Height Da­tum Re­la­tions The vertical datum of a height reference system is usually determined by the mean sea level, which is estimated by one or more tide gauges of an adjacent sea. The tide gauge