OVERVIEW OF GEODETIC PROJECTIONS USED TO CREATE THE COORDINATE BASIS FOR THE SPATIAL DESCRIPTION OF RAILWAY INFRASTRUCTURE OBJECTS

The article describes the methods of projecting the Earth's surface onto a plane and the rules for establishing the relationship (correspondence) between the geodetic coordinates of the points of the Earth's ellipsoid and the rectangular coordinates of the same points on the plane. The equiangular projections used to solve geodesic problems on the plane are considered in detail: the Gauss-Kruger projection, the universal Mercator UTM projection, the equiangular conic Lambert projection.

1. The long‑term development programme of the open joint‑stock company “Russian Railways” until 2025, approved by Order No. 466‑r of the Government of the Russian Federation dated March 19, 2019.

2. "Russian Railways""s scientific and technological development Strategy for the period up to 2025 and for the future up to 2030 ("White Paper"), approved by the Order of JSC "Russian Railways" dated April 17, 2018 No. 769p.

3. The Strategy of digital transformation of JSC "Russian Railways" until 2025 (Appendix No. 4 to Minutes of the meeting of the Board of Directors of "Russian Railways" dated October 25, 2019 No. 5).

4. The concept of introducing geoinformation technologies, including high-precision methods of coordinate and time support, into the production processes of construction, operation, repair and diagnostics of infrastructure, traffic management, traction management. Approved by Order No. 2976/r of JSC “RZD” dated December 30, 2020.

5. S.V. Dukhin, A.V. Nuykin, A.O. Kupriyanov, E.S. Bekchanova. Development of a high‑precision coordinate system for the Moscow–Saint Petersburg–Buslovskaya high‑speed railway line. // Proceedings of Higher Educational Institutions, section “Geodesy and Aerial Photography,” No. 2, Moscow: 2013. EDN: UIYBGP

6. L.A. Vakhrameeva, L.M. Bugaevsky, Z.L. Kazakova. Mathematical Cartography: A Textbook for Universities. – Moscow: Nedra, 1986. – 286 p. EDN: TIDXXX

7. B.B. Serapinas. Mathematical Cartography. Textbook for universities. – Moscow: Publishing Center “Academy”, 2005. – 336 p.

8. O.A. Lebedeva. Map projections: Methodological guide, Novosibirsk Educational and Methodological Center for GIS and Remote Sensing, Novosibirsk, 2000. – 35 p.