In this paper, we present the beginnings of navigation and what it was that drove its development forward. We will also present the development of global navigation satellite systems, known as GNSS, as well as all the most important GNSS systems and their development. Finally, the basic operation of such systems and the differences between them will be presented.V nalogi bomo predstavili začetke navigacije in kaj je poganjalo njen zgodovinski razvoj. Ogledali si bomo tudi razvoj globalnih navigacijskih satelitskih sistemov, ki jih poznamo pod kratico GNSS, se podrobneje poglobili v razvoj najpomembnejših med njimi in obravnavali njihovo osnovno delovanje ter razlike med njimi