MOLDOVA (GM2005)
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Authors: O. Kucher, I. Stophai, O. Renkevich
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Created: 2005
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Resp: M. Ovdii
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Description:
The GM2005 quasi-geoid model for the territory of the Republic of Moldova was computed by the Ukrainian Research Institute of Geodesy and Cartography. The area covered by the models is 45°N - 48.5°N and 26.5°E - 30.5°E with a grid spacing of 1' x 1.5'. It is referred to the GRS80 ellipsoid in the ETRS89 frame. GM2005 was based on the European gravimetric quasi-geoid model EGG97, that was converted into the Baltic normal height system (1977) using a 7-parameter Helmert transformation. A remove-restore procedure was implemented exploiting the global model GGM EIGEN-CG01C up to order and degree 360. Its contribution was first removed from 803 GPS/levelling derived height anomalies and from 2014 grid points of the transformed EGG97 height anomalies. Then, the obtained residuals were interpolated to create a grid by least square collocation. Finally, the height anomalies of the global model were restored. To assess the accuracy of the resulting GM2005 quasi-geoid model, a comparison with independent GNSS/levelling points was performed, showing differences with the standard deviation of about 5 cm.
Reference:
O. Kucher, U. Stophai, O. Renkevich (2005). Construction of the quasi geoid model on the territory of Republic of Moldova. Internal Report of Ukrainian Research Institute of Geodesy and Cartography, Kiev (in Ukrainian).
Web of Science ID:
DRCI:DATA2024117029990501
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