Navigation
Links
GLONASS
http://www.glonass-center.ru/frame_e.html
Provides overview of the Russian satellite navigation system. Includes orbital data, user information and constellation history.
Galileo Joint Undertaking
Offers general system information and industry related material by the consortium building the system.
United States Mission to the European Union: Galileo Dossier
http://www.useu.be/Galileo/index.htm
Offers overview of USA's involvement in the Galileo program.
GPS World
http://www.gpsworld.com/gpsworld/
Magazine offering on-line news and updated reference information in space and ground GNSS systems.