What is GPS?
The global positioning system (GPS) is a navigation system owned by the utility of the United States of America (but is open-source and free for users to use). It consists of a network of 24 satellites in orbit around the earth (placed by the US Department of Defense). This system was originally intended for military applications, but was made usable by civilians in the 1980s. The beauty of the GPS system is that it works anywhere in the world, 24 hours a day/7 days a week, and there are no charges to use or setup. It consists of three segments: the space segment, control segment, and user segment. The GPS is maintained by the US Air Force; which also develops and operates the space and control segments.
Video
GPS and Kinematics by Simarjeet Singh Thind is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
Based on a work at http://www.gps.gov/.