Definitive transition to GNSS technology of achieving geodetic networks for cadastre implementation in cities and municipalities, enforce establishing a unique way of linking between current measurements and existing geodetic data, with a sufficient accuracy proper to urban cadastre standards. Regarding city of Iasi, is presented a different method of transformation which consist in an interpolation grid for heights system. The Romanian national height system is „Black Sea-1975” normal heights system. Founded in 1945 by Molodenski, this system uses the quasigeoid as reference surface, being in relation with the ellipsoid through the height anomalies sizes in each point. The unitary transformation between the ETRS- 89 ellipsoidal height system and the normal one, at national level is provided through the „TransdatRo” program developed by NACLR (National Agency for Cadastre and Land Registration).
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Bofu, C., Chirila, C., (2007). Geographic Information Systems. Mapping and editing maps, Publisher Tehnopress, Iasi,.
Chirila, C. , Manuta, A., (2006) , The realization of the GPS geodesic network necessary for the implementation of the real - urban building cadastre and the database formation on the administrative territory of the Iasi municipality, RevCAD Journal of Cadastre no. 6, Alba Iulia, pp 35-43.
Chirila, C., Mihalache R.M. (2011), Coordinate transformations for integrating local map information in the new geocentric European system, for urban real-estate cadastre achievement, Scientific Journal ”Mathematical modelling in civil engineering”, Vol. 7 - No. 4, Bucharest , pp 159-165.
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Salceanu G., 2009, Contributions to achieve Geographic Information System for real estate cadastre of a municipality, Gheorghe Asachi Technical University Iasi, PhD thesis.