Aero-Linx!

Scouring the information super airways can sometimes be a tough, if educational, task for the Aero-News staff... but it also allows us to check out some truly neat and exciting sites, so it's not that bad a gig. On any given day, we may check dozens (and often hundreds) of different sources for story ideas, and facts confirmation. And, as is the nature of our business, much of this is done on the Internet.

The ANN gang decided we probably shouldn't keep some of the neat sites, info resources, and organizations we've discovered to ourselves... so we decided to bring you Aero-Linx. These are the sites that WE check out -- when we need added perspective, a new spin on a day's topic... or just want to escape into cyber-aero-space for awhile.

Look for some of our favorite sites, coming each day to ANN via Aero-Linx. Suggestions for future Aero-Linx segments are always welcome, as well.

Aero-Linx: FreeFlight -- Introduction to GPS

The Global Positioning System (GPS) is a space-based radio-navigation system consisting of a constellation of satellites and a network of ground stations used for monitoring and control. A minimum of 24 GPS satellites orbit the Earth at an altitude of approximately 11,000 miles, providing users with means to accurately determine their position, velocity, and time while anywhere in the world irrespective of weather conditions.

FMI: http://freeflightsystems.com/gps.htm