The aim of this thesis was to elaborate what geoinformation systems are and how they developed trough history, which components they consist of, where are they applied and what kinds of data can we display and process, as well as a dazzling view of the two most famous data processing and display programs (ArcGIS i QGis). Further more, after elaboration of geoinformation systems, a description of what global positioning systems are was given, the three segments they consist of and how powerfull impact they have on the economy. Also, the most important GPS systems such as european Galileo system, american GPS, russian GLONASS, chinese BeiDou system, japanese and indiansystems are mentioned, as well as supplements to such systems as EGNOSS is, wich strives to improve characteristics of Galileo navigational system and those of CROPOS system, a croatian positioning system which has the same purpose and is consisted of a series of reference stations. Finally, through the mobile application project, GPS data acquisition was shown with very high precision, based on which similar known applications operate, and then the collected data is displayed in QGis.