GPS (Global Positioning System)


Definition: A Global Positioning System is a satellite-based radio navigation system run by the U.S. Department of Defense.

What This Means: Signals from at least four satellites on the horizon at all times are sufficient to compute the current latitude, longitude, and elevation of a GPS receiver anywhere on earth to within a few meters. GPS coordinates are used to locate school buildings and other facilities for emergency plans. Bus routes, school boundaries, and geography lessons use GPS data.


Need another definition?

Please select from the menu above