FEATURES OF CONSTRUCTION OF DIGITAL RELIEF MODEL ACCORDING TO THE RESULTS OF GEODESIC SURVEYING LOCATIONS

  • A. Batrakova Kharkiv National Automobile and Highway University
  • Y. Dorozhko Kharkiv National Automobile and Highway University
  • V. Yemets Kharkiv National Automobile and Highway University
Keywords: Delaunay algorithm, horizontal, group of triangles, surface, relief, digital model.

Abstract

Topographic maps in digital and electronic forms are created on the basis of available paper topographic maps or on the basis of primary materials of geodetic surveys. Geodetic surveys are performed both by ground methods, without the use of photogrammetric materials, and on the basis of materials obtained as a result of ground phototheodolite or aerial photography.

The construction of a digital terrain model is a multi-stage process, which consists of a significant number of interconnected operations performed at the stage of in-house processing of the results of geodetic measurements carried out during engineering and geodetic surveys. The quality of the final result of modeling depends on the quality of each stage of construction of a digital terrain model, so it is extremely important to pay attention to all technological processes of model construction.

The digital relief model is considered as an ordered set of triangular faces constructed by the Delaunay algorithm. The main condition of this type of triangulation is that in the middle of the circle described around any triangle can not be the vertex of another triangle.

Construction of a digital terrain model based on the results of geodetic surveying of the area in the general case can be divided into several stages. At the beginning, an automated construction of triangulation is performed on the basis of the results of geodetic measurements, which carry information about three-dimensional coordinates of survey points. Allotments adjust the display of horizontals. Regardless of the selected surface display style, the surface model is a grid of triangles.

At the next stage of construction of the digital model of a relief carry out visual control of the created model and if necessary carry out editing of elements of a surface and change of position of edges of triangulation for change of position of horizontals.

The last stage of building a digital terrain model based on the results of geodetic surveying of the area is the design of modeling results, the application of individual styles of reflection for individual areas of the surface and the creation of mountain strokes and signatures of horizontals.

Author Biographies

A. Batrakova, Kharkiv National Automobile and Highway University

Doctor of Engineering Science, Professor

Y. Dorozhko, Kharkiv National Automobile and Highway University

PhD, Head of the Department

V. Yemets, Kharkiv National Automobile and Highway University

Assistant of the Department

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Published
2021-03-26
How to Cite
BatrakovaA., DorozhkoY., & YemetsV. (2021). FEATURES OF CONSTRUCTION OF DIGITAL RELIEF MODEL ACCORDING TO THE RESULTS OF GEODESIC SURVEYING LOCATIONS. Municipal Economy of Cities, 1(161), 104-108. Retrieved from https://khg.kname.edu.ua/index.php/khg/article/view/5721