News tagged with navigation satellite system

NASA pinning down 'here' better than ever

Before our Global Positioning System (GPS) navigation devices can tell us where we are, the satellites that make up the GPS need to know exactly where they are. For that, they rely on a network of sites that ...

Feb 23, 2012
4.5 / 5 (2) 1

China's satellite navigation system live

China's home-grown satellite navigation system launched a limited positioning service Tuesday, the official Xinhua news agency said, as the country seeks to break its dependence on foreign technology.

Dec 27, 2011
4.6 / 5 (9) 5