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Geodetic Reference System 2015 - the Approach in North ... - CLGE

Geodetic Reference System 2015 - the Approach in North ... - CLGE

Legal mandate and

Legal mandate and transfer into practise Ministry of the Interior and Local Affairs NRW, Germany Legal mandate (§4 DVOzVermKatG): The reference point field has to be kept up to date. To detect changes the spatial information system also includes historical data. Mining activities cause ground movements Periodic re-levelling campaigns under managment of Geobasis NRW (Leitnivellement) __________________________________________________________________________________________________________ The Geodetic Infrastructure in Europe – today and tomorrow - Sweden, Umeå 22-23 June 2011

Consequences: clasical point field (c. 30000TP 1.-4. order) NRW- geodetic reference 2015 (part of the German geodetic reference frame) Ministry of the Interior and Local Affairs NRW, Germany Do we still need reference point fields? Geod. fundam. points ca. 170 GGP (integration of 3D-coordinates, physical heights and gravity) Leveling points Leveling DHHN-NRW points DHHN-NRW AND (ca. additional Additional 4000 HFP) monitoring point field clasical leveling points (NIVP 2.+3. order) Gravity points SFP (10 abs. grav. points + x rel. grav. points) __________________________________________________________________________________________________________ The Geodetic Infrastructure in Europe – today and tomorrow - Sweden, Umeå 22-23 June 2011

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