ISSN 0536-1028 (Print)              ISSN 2686-9853 (Online)  

Grishko S. V., Bukin V. G. – Perm National Research Polytechnic University, Perm, the Russian Federation. E-mail:
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The article compares the results of satellite definitions and high-precision leveling of the II class, obtained at
the geodynamic polygon of the Astrakhan gas condensate field in the period of 2005–2015. It is shown that geometric
leveling and satellite navigation systems have different initial altitude counting surfaces, which in general do not coincide
and are not parallel, so a direct comparison of the excesses without taking into account the height anomalies or their
differences is meaningless and incorrect. The systematic level of deviations is high and in some cases does not fit even
in the tolerances of technical leveling. Based on studies of the accuracy of satellite measurements, it is shown that in
the analogous satellite and leveling networks the accuracy of determining vertical displacements by satellite equipment
in fast statics satisfies the leveling of the IV class. An increase in the duration of the sessions of observations makes
it possible to achieve the accuracy of the III class of leveling. In order to achieve the performance of higher classes,
in addition to lengthening the sessions of observations, it is necessary to increase the conditionality of the satellite
network in comparison with the leveling one. It is shown that the existing structure of the satellite and leveling networks
of the geodynamic polygon of the Astrakhan gas condensate field and the adopted observation techniques allow satellite
determinations to reach the accuracy of the II class of leveling. An example of the integrated use of satellite and traditional
observations in geodynamic studies is given, which allows to significantly reduce leveling works without losing accuracy
and informative monitoring.
Key words: geodetic height; normal height; height anomaly; satellite leveling; geometric leveling; quasygeoid; satellite
measurements; geodynamic polygon; vertical displacements.
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