What is the difference between GPS and the new GNSS?
GNSS : “Global Navigation Satellite System”; any of, or the collective combination of, the operational spaceborne radionavigation systems, at this time comprised of the Navstar GPS (USA)system and the GLONASS (Russian Federation) system. GPS: “Global Positioning System”; a specific spaceborne radionavigation system financed and operated by the U.S. Department of Defense Systems under construction include the European Union “Galileo” and the Chinese “Compass” GNSS.