GPS Principles Video
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GPS position is determined by use of trilateration rather than triangulation. Trilateration uses intersections of spheres. Triangulation uses angles.
Very common mistake.
3 satellites give you 2D, it requires 4 satellites to give 3D position!!!! The 4 satellite is to correct for time and to give altitude or the 3rd dimension.
Couple of other minor errors but otherwise good info. The principles don't change much in GPS.
franknblaster 10 months ago
I love the technology, fyi before I bought I checked out gpssatnavreviews (.) com
whimsicalfuel58 1 year ago
great video
dhcpy 2 years ago
Excellent introduction to GPS.
mknappdal 2 years ago