Technology

How GPS Works

Technology

How GPS Works

GPS is a constellation of 24 or more satellites flying 20,350 km above the surface of the Earth.  Each one circles the planet twice a day in one of six orbits to provide continuous, worldwide coverage. GPS satellites are shown in four locations across a starry sky.  Each emits a straight beam pointing to the center of the poster.  The four beams converge at a single point on the roof of a green tractor.  A farmer can be seen driving the tractor through very tight rows of crops.

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