Global Positioning System Primer
- Welcome to the Global Positioning System (GPS)
What is GPS? What is Navigation?
GPS Elements Satellites in Space Ground Control Stations and Receivers, How GPS Works - An Amazing System, Military Uses for GPS
- The general Catalogue of Publications contains all current publications,except the Standards currently in force, which can be found in the separate List of ITU-T Recommendations and List of ITU-R Recommendations.