ON ACCOUNTING FOR DYNAMIC EFFECTS IN ESTABLISHING THE STATE COORDINATE SYSTEM: A CASE STUDY OF THE GSK-2035 PROTOTYPE
Rubrics: GEODESY
Authors:
1.
Siberian State University of Geosystems and Technologies
Type:
Article
Pages:
from 8
to 21
Status:
Published
Received:
01.05.2025
Accepted:
24.10.2025
Published:
31.10.2025
Subject area:
VAK Russia 1.6.22
UDC 528.236
CSCSTI 36.01
UDC 528.236
CSCSTI 36.01
Language:
Russian, English
Keywords:
national datum, reference frame, transformation, deformation, tectonic plate motion
Funding:
Issledovanie vypolneno v ramkah NIR «GEOTEH-Kvant» po zakazu PPK «Roskadastr»
Abstract:
The article is devoted to overcoming the decimeter-level limit of positioning accuracy, resulting from inconsistency between the purpose of the national datum GSK-2011 and its underlying theoretical definition. The criteria for the optimal definition of the national datum are formulated in respect to the most cost-effective satisfying of user needs at a time interval of more than 20 years. A definition and a method of implementation of datum prototype, designated GSK-2035, are presented. GSK2035 enables accounting for the physical deformation of the territory, while ensuring the constancy of the coordinates of real estate objects, unambiguous transformation to ITRF at a sub-centimeter accuracy level for the entire territory of Russia with maximum simplicity of transformations. The cartesian coordinates in GSK-2035 and ITRF2020 will be numerically close within 15 years after the introduction of the proposed datum, which makes it optimal for creating a unified cartographic layer and allows it to be used for GNSS navigation with relatively high accuracy even without transformation. In order to achieve the highest accuracy of transformations in GSK-2035, in nearly three quarters of cases in the territory of the Russian Federation, the standard Helmert model with parameters’ rates is sufficient. In other cases, high accuracy is achieved by applying a constant velocity field and local corrections, which are an integral part of GSK-2035. The transformations are fully automated. The introduction of a reference frame with the presented characteristics is a prerequisite for the implementation of a unified high-precision geo-information space and a navigation field of the corresponding accuracy throughout the territory of Russia. That would also provide increase in the efficiency of high-precision positioning by one or two orders of magnitude comparing to current procedures of accessing the national datum.
The article is devoted to overcoming the decimeter-level limit of positioning accuracy, resulting from inconsistency between the purpose of the national datum GSK-2011 and its underlying theoretical definition. The criteria for the optimal definition of the national datum are formulated in respect to the most cost-effective satisfying of user needs at a time interval of more than 20 years. A definition and a method of implementation of datum prototype, designated GSK-2035, are presented. GSK2035 enables accounting for the physical deformation of the territory, while ensuring the constancy of the coordinates of real estate objects, unambiguous transformation to ITRF at a sub-centimeter accuracy level for the entire territory of Russia with maximum simplicity of transformations. The cartesian coordinates in GSK-2035 and ITRF2020 will be numerically close within 15 years after the introduction of the proposed datum, which makes it optimal for creating a unified cartographic layer and allows it to be used for GNSS navigation with relatively high accuracy even without transformation. In order to achieve the highest accuracy of transformations in GSK-2035, in nearly three quarters of cases in the territory of the Russian Federation, the standard Helmert model with parameters’ rates is sufficient. In other cases, high accuracy is achieved by applying a constant velocity field and local corrections, which are an integral part of GSK-2035. The transformations are fully automated. The introduction of a reference frame with the presented characteristics is a prerequisite for the implementation of a unified high-precision geo-information space and a navigation field of the corresponding accuracy throughout the territory of Russia. That would also provide increase in the efficiency of high-precision positioning by one or two orders of magnitude comparing to current procedures of accessing the national datum.
Keywords:
national datum, reference frame, transformation, deformation, tectonic plate motion
national datum, reference frame, transformation, deformation, tectonic plate motion
