GPS Systems
GPS = The Global Positioning System = a satellite-based hyperbolic navigation system
This system consists of three segments:
The space segment: 24 operating satellites that transmit one-way signals that give the current GPS satellite position and time.
The control segment: worldwide monitor and control stations that maintain the satellites in their proper orbits through occasional command maneuvers, and adjust the satellite clocks. It tracks the GPS satellites, uploads updated navigational data, and maintains health and status of the satellite constellation.
The user segment: the GPS receiver equipment, which receives the signals from the GPS satellites and uses the transmitted information to calculate the user's three-dimensional position and time.
See also
Longitude and Latitude
The space segment: 24 operating satellites that transmit one-way signals that give the current GPS satellite position and time.
The control segment: worldwide monitor and control stations that maintain the satellites in their proper orbits through occasional command maneuvers, and adjust the satellite clocks. It tracks the GPS satellites, uploads updated navigational data, and maintains health and status of the satellite constellation.
The user segment: the GPS receiver equipment, which receives the signals from the GPS satellites and uses the transmitted information to calculate the user's three-dimensional position and time.
See also
Longitude and Latitude