Lots of people talk about GPS but don’t ever really stop to think what it is all about. What we’ve learned through our education is that GPS stands for Global Positioning system and it was originally intended for sole use by the United States’ military.
You see, back in the 1970’s and 1980’s the U.S. launched satellites into geosynchronous orbits around the Earth. The communications satellites are positioned in such a way as to see the entire planet’s surface. From their position high above the Earth, they can communicate with any GPS device on the surface.
The U.S. military used (and still uses) it to navigate its land, air and sea units around (more…)