Troubleshooting
72
What is GPS?
The Global Positioning System (GPS) is a satellite-based navigation system
made up of a network of 24 satellites placed into orbit by the U.S.
Department of Defense. GPS was originally intended for military applications,
but in the 1980s, the government made the system available for civilian use.
GPS works in any weather conditions, anywhere in the world, 24 hours a day.
There are no subscription fees or setup charges to use GPS.
Map matching
As mentioned, the GPS used by this Mobile Navigation System are susceptible
to certain errors. Their calculations may on occasion place you in a location on
the map where no road exists. In this situation, the processing system
understands that vehicles travel only on roads, and is able to correct your
position by adjusting it to a near by road. This is called map matching.
