Geospatial Tech Chapter 4: Global Positioning System

GPS

global positioning system; a technology that uses signals broadcast from satellites for navigation and position determination on Earth

NAVSTAR GPS

the U.S. global positioning system

GNSS

global navigation satellite system; an overall term for the technologies that use signals from satellites to fin locations on Earths surface

Space segment

one of the three segments of GPS, consisting of the satellite and the signals they broadcast from space

Control segment

one of the three segments of GPS, consisting of the control stations that monitor the signals from the GPS satellites

User segment

one of the three segments of GPS, consisting of the GPS receivers on the ground that pick up the signal form the satellites

Trilateration

the process of finding a location in relation to three points of reference

GLONASS

Russia's GNSS

Galileo

the European Union's GNSS

BeiDou-2

China's GNSS

Geocaching

using GPS and a set of coordinates to find locations of hidden objects