Metadata Details: The Serbian reference gravity network

The fundamental gravimetric network represents the gravimetric reference frame of the Republic of Serbia, which is materialized by a set of permanently stabilized points with determined Earth's gravity absolute acceleration values referring to the realization epoch 1971.0 of the IGSN71 system (International gravimetric standard network).
The gravimetric network is a closed polygons system containing 75 reference points that cover the Serbian territory at average distances from 50 to 70 km. The gravity network structure includes fundamental benchmarks of the Second-order High Accuracy Levelling network (NVT2 project), points of the spatial reference network (SREF project), and also the 3 fiducial points with measured absolute gravity.

1. First order Gravity Network 1952/53 (SFRY), Potsdam, distance 200-300km, number of points 13.
2. Second order Gravity Network 1952-1958 (SFRY), Potsdam, the distance between points 15-50km, number of points 1900
3. Reference Gravity Network 1964-1967 (SFRY), Potsdam, the distance between points 10km, number of points 1520
4. Reference Gravity Network 2004-2009, IGSN71 system, distance 50-70km, number of points 75.
The RMS error of the estimated gravity accelerations at the points of the reference gravimetric network obtained as a global quality measure of the least squares adjustment is approximately 10 µGal.

otherRestrictions

Not specified