Abstract
Abstract. The article describes the creation of initial three dimensional geodatabase from planning and designing through the determination of technological and manufacturing processes to practical using of Central Geospatial Database (CGD – official name in Slovak language is Centrálna Priestorová Databáza – CPD) and shortly describes procedures of its revision. CGD ensures proper collection, processing, storing, transferring and displaying of digital geospatial information. CGD is used by Ministry of Defense (MoD) for defense and crisis management tasks and by Integrated rescue system. For military personnel CGD is run on MoD intranet, and for other users outside of MoD is transmutated to ZbGIS (Primary Geodatabase of Slovak Republic) and is run on public web site. CGD is a global set of geo-spatial information. CGD is a vector computer model which completely covers entire territory of Slovakia. Seamless CGD is created by digitizing of real world using of photogrammetric stereoscopic methods and measurements of objects properties. Basic vector model of CGD (from photogrammetric processing) is then taken out to the field for inspection and additional gathering of objects properties in the whole area of mapping. Finally real-world objects are spatially modeled as a entities of three-dimensional database. CGD gives us opportunity, to get know the territory complexly in all the three spatial dimensions. Every entity in CGD has recorded the time of collection, which allows the individual to assess the timeliness of information. CGD can be utilized for the purposes of geographical analysis, geo-referencing, cartographic purposes as well as various special-purpose mapping and has the ambition to cover the needs not only the MoD, but to become a reference model for the national geographical infrastructure.
Highlights
1.1 Stimulus for the creation of Central Geo-spatial Database (CGD)The development of the Military Information System about Territory (VISU) started in the Topographic Institute of Slovak Army Forces in 1995
CGD concept was derived from the applicable international standards DIGEST (Digital Geographic Exchange Standard - STANAG 7074) and respected standards of ISO 19114 and other binding regulations
It was decided that the main data source will be aerial images (LMS) and the initial filling of the CGD will be done by using of technologies of digital photogrammetry
Summary
The development of the Military Information System about Territory (VISU) started in the Topographic Institute of Slovak Army Forces in 1995. In 2001, it was decided that due to the topographic substrates obsolescence, and the own database outdated data, will be performed a new mapping of the territory of the Slovak Republic. The basis for the contents of the new Central Geo-spatial Database (CGD) was the appropriate choice of optimal information sources and data collection methods, which allowed collecting, analyze, use, store and exchange data with coalition partners. In 2003 aerial photogrammetry was fully prepared for the data creating of spatial database using digital stereophotogrammetric devices. Aerial photogrammetry enabled significantly improve data quality in the following years, provide users with more information about territory over which it will be possible to solve spatial tasks.
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