Methods of creating global digital elevation models for the territory of the Russian Federation

Geodesy

UDC:

528.2

DOI:

10.22389/0016-7126-2026-1031-5-12-22

1 Ganagina I.G.

2 Opritova O.A.

Year:

2026

№:

1031

Pages:

12-22

Siberian State University of Geosystems and Technologies

1,

2,

Abstract:

The authors present the results of creating a digital relief model (DEM) for the territory of the Russian Federation to refine the models of the Earth`s gravitational field characteristics. The position of the DEM nodes is determined by the centers of the trapezoids, which are regularly arranged in increments of 5 arc minutes in latitude and longitude in the WGS-84 coordinate system. The height values at the DEM nodes are the average ones within the corresponding shapes in the Baltic Elevation System. A technology of solving the problem by means of GIS "Panorama" is given. The developed method will enable creating DEMs in the form of point objects with an average height value located in the centers of trapezoids of any size. The elevation data can be specified if there are relevant cartographic materials at a larger scale for the territory of the Russian Federation. The created DEM will make it possible to refine the model findings of gravity anomalies, quasi-geoid heights and vertical line deviations in the said area based on the consideration of the altitude component as the average value for trapezoid centers in five-arc-minute increments. The solution of this problem is especially relevant due to the calling needs of science and geodetic production on the accuracy of constructing the Earth`s gravitational field models

Keywords:

digital topographic maps, elevation matrix, geoinformation system, gravitational field, modeling, regular grid, trapezoid

The study was carried out within the framework of the GEOTECH-KVANT-3 research project in order to improve the accuracy of coordinate-time definitions in the territory of the Russian Federation

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Citation:

Ganagina I.G.,

Opritova O.A.,

(2026) Methods of creating global digital elevation models for the territory of the Russian Federation. Geodesy and cartography = Geodeziya i Kartografiya, 87(5), pp. 12-22. (In Russian). DOI: 10.22389/0016-7126-2026-1031-5-12-22