GPS Almanac and Constellation Charts

GPS World Magazine has a 2 page article (48-49, December 2010) on GPS Almanac and Constellation Charts  This is a good overview of all the GPS Constellations and a brief History of them.  They are listed by who operates them: USA(GPS), Russia(Glonass), Europe (Galileo), China(Compass) and the SBAS-Realtime GPS Satellites.  For more information on this topic visit the GPS World – The Almanac article.

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