If anyone wants to get into the nitty-gritty details of GPS / GNSS, there's a good series of lectures (course) available from Standford University; playlist: *

If anyone wants to get into the nitty-gritty details of GPS / GNSS, there's a good series of lectures (course) available from Standford University; playlist: * https://www.youtube.com/watch?v=o1Fyn_h6LKU&list=PLGvhNIiu1ubyEOJga50LJMzVXtbUq6CPo https://www.youtube.com/watch?v=o1Fyn_h6LKU&list=PLGvhNIiu1u... Topics include navigation message structure, signal encoding, error budgets, Keplerian parameters, path loss/antenna gain/link budget, plus orbital details of GLONASS/QZSS/BeiDou/Galileo.