GIS MAP USING FREE GEOSPATIAL DATA FOR ENHANCED 3D VISUALIZATION OF RURAL ROAD NETWORKS. CASE OF STUDY: WILAYA OF AIN TEMOUCHENT

Abstract

The use of three-dimensional GIS maps has become an indispensable tool in civil engineering projects, especially those related to road networks and utilities. However, their design requires costly acquisition tools and mastery of specific software. This can be overcome by utilizing current GIS platforms such as Google Earth, OSM, and ESRI, as they provide free visualization of geospatial data, even in 3D. Nevertheless, these platforms impose restrictions and limitations on the nature, accuracy, and downloading of raw online data. Our objective is to address these limitations by developing a methodology for obtaining geospatial data freely for offline use, focusing on a specific case study area: rural road networks in the Wilaya of Ain Temouchent. Geoprocessing geospatial data from satellite images such as LANDSAT 9, Sentinel 2, SRTM, and ASTER, as well as geological data, has enabled us to establish a 3D GIS map of the road network, enhanced by the integration of dozens of thematic layers using Globalmapper V25. emphasis is placed on reading integrated metadata