Today three Global Navigation Satellite Systems (GNSS) are available or under development: GPS, Glonas and Galileo.

The American Global Positioning System (GPS) has been launched in the early 1980's by the US Department of Defence (DoD) as a means of determining the position of military equipment and personal. In 1983, President Ronald Reagan issued a directive making the system available free for civilian use as a common good. Today GPS is the most popular GNSS system and very popular with personal navigation devices, like with our other FELA brand carloc.

The Russian Glonas had also been established in the early 1980s by the former Soviet Union as a counterpart to the US GPS system. The system shall be fully operational by 2012.

The European Galileo Programme has been launched in 2002 by the European Commission and the European Space Agency (ESA). Galileo will be compatible with and also an augmentation of the American GPS. The system is still under development and shall be fully operational between 2014 and 2016.