ДОСВІД ЗАСТОСУВАННЯ ГІС-ТЕХНОЛОГІЙ ПРИ СТВОРЕННІ (ОНОВЛЕННІ) ЦИФРОВИХ ТОПОГРАФІЧНИХ КАРТ МАСШТАБУ 1:25000

Abstract

The purpose of this work is to research the actual methodology of creating a digital version of the nomenclature sheet on a scale of 1:25000 based on aerospace data using modern software for the formation of a single database of topographic data on a scale of 1:25000. The basis of the study is the analysis of the possibilities of applying theoretical and practical approaches to the updating of topographic maps, the selection of vectorization methods,the use of tools for quick editing and geoprocessing of data, ensuring the implementation of a system of checks of the nomenclature sheet and automatic control and assessment of the quality of vectorization by using geoinformation technologies of the ArcGIS software. The article discusses the importance of research aimed at creating and updating electronic topographic maps of Ukraine. The authors investigate the processes of creating (updating) digital topographic maps on a scale of 1:50000 in order to form a single database of topographic maps on a scale of 1:25000. The key stages of creating (updating) electronic topographic maps on a scale of 1:25000 for Ukraine are described. Using the ArcGIS program, a practical example of updating a topographic map ofscale 1:25000 was developed, based on the application of geoinformation technologies, the use of scanned paper maps, recent aerial photographs and satel-lite images. Methodological aspects of vectorization, detailing, completeness of attributive information, topological consistency and consistency of data, as well as features of automated quality control of updated electronic topographic maps are analyzed. The results of the study confirm that the use of geoinformation technologies and process automation can provide an up-to-date topographic data base that is important for various fields, improving project planning and implementation. The created base of topographic data on a scale of 1:25000 takes into account the functionality of step-by-step vectorization, selection criteria, rules of topological relationships, and automated quality control using modern geoinformation technologies.