GPS

The Global Positioning System (GPS) is a satellite-based radio navigation system owned by the United States Space Force and operated by Mission Delta 31. It provides geolocation and time information to GPS receivers anywhere on or near the Earth with an unobstructed line of sight to four or more GPS satellites. The GPS system was created by the U.S. Department of Defense in 1973 and initially limited civilian use to an average accuracy of 100 meters due to the intentional error introduced into the GPS data known as Selective Availability. However, the SA system was disabled in 2000, and the next generation of GPS satellites was designed without this feature.