GLOBAL POSITIONING SYSTEMS
type: Concept
in scheme: sciencekeywords
definition: A surveying method that uses a set of 24 satellites in geostationary position high above the Earth. Specially designed GPS receivers, when positioned at a point on Earth, can measure the distance from that point to three or more orbiting satellites. The coordinates of the point are determined through the geometric calculations of triangulation. GPS provides accurate geodetic data for any point on the Earth.

DATA ANALYSIS AND VISUALIZATION
type: Concept