There’s a whole world of GPS-alikes out there. Let’s take a look. The Global Positioning System (GPS) that we all know and love flew its first satellite in the distant past of 1978 ...

Ever wonder how the Global Positioning System (GPS) works? This extraordinarily complex system is actually based on some simple concepts. Find out what they are in this Shockwave game.

"China's Beidou is the world's Beidou, and the global ... as GPS, if not more so. Ran Chengqi, director of the China Satellite Navigation Office, says the system will have a positioning accuracy ...