The Sky's The Limit - The Global Positioning System (GPS)101 <<Safer,Smarter,Confident Pilots>> #SmartPilotLikeToLearn The Global Positioning System (GPS), originally Navstar GPS, is a satellite-based radionavigation system owned by the United States ...
Why are there only six orbital planes for a GPS satellite? Why are these inclined at 55 degrees? - Quora
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Characterization of on-orbit GPS transmit antenna patterns for space users | NAVIGATION: Journal of the Institute of Navigation
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