CONSTRUCTION OF A ONE-DIMENSIONAL GRAPH OF THE TERRAIN BY WIND DIRECTION

Abstract. Three-dimensional surfaces are important objects for the study of modern geographic information systems. Currently, the number of works on this topic is growing rapidly due to the introduction of information systems. They present mathematical models of three-dimensional images. Many scientific studies are devoted to the problem of synthesis of realistic images, as well as the construction of surface models based on Delaunay triangulation. The Delaunay triangulation problem is one of the basic ones in computational geometry. Many other problems are reduced to it, it is widely used in computer graphics and geographic information systems for modeling surfaces and solving spatial problems. As practice shows, the choice of structure to represent triangulation has a significant impact on the theoretical complexity of algorithms, as well as on the speed of a particular implementation. In addition, the choice of structure may depend on the purpose of further use of triangulation. In order to bring the terrain model closer to the real one, additional elements are introduced into it, which ensure that its linear and area structural elements are taken into account and displayed. In this regard, there is a need to develop and study a mathematical model of terrain display, taking into account its illumination by applying a linear density. This paper is devoted to solving these problems. The software for the computer is designed to build a one-dimensional graph of the terrain along the wind direction based on the original terrain elevation matrix. The program is included in the hardware-software complex «monitoring of the fire safety system».

Keywords: hardware and software package, terrain, automated system, fire safety.