UN Education Curriculum – Global Navigation Satellite Systems
United Nations, Office for Outer Space Affaires [ link-1708-0019 ] Link to unoosa.org : Global Navigation Satellite Systems (GNSS) include constellations of Earth-orbiting satellites that broadcast their locations in space and time, of networks of ground control stations, and of receivers that calculate ground positions by trilateration. GNSS are used in all forms of transportation:… Read More »