Now that you know how to recieve datas from the GPS, let's see what you can actually do with them.
The main applications are the navigation solutions,
the data acquititions with spatial references and the geodesie.
These 3 main applications will lead to 3 reciever categories.
Moreover, during the preparation of a trip, you can give your point of arrival, and the reciever can calculate:
If you have a winding trip, you just have to place enough waypoints.
All these parameters are very intersting in marine navigation and in plane.
Furthermore, you can now give maps to a lot of recievers, they will draw it in colors,
and place your waypoints on it.
That's why Navigation Systems are also very useful in a car, VTT, in the mountains...
At last, some recievers can remember your trips with the time between two waypoints. This
is a very intersting feature for transport companies.
It's a lot more precise because it uses two frequencies, and thus costs very much
(up to 10 000 euros).
It has been used to measure the altitude of MontBlanc, or to monitor continents, zones with
high risks.
It can also be used to control art constructions like bridges.