Global Positioning System (GPS) is a constellation
of satellites orbiting the Earth approximately
11,000 miles in space. The GPS satellites
in this animation are not drawn to scale.
However, their orbits and orientation to
the Earth are approximately correct. GPS
satellites are organized into six different
orbital paths completely covering the Earth.
Looking at the Earth top down from the North
Pole, the six orbits are spaced at 60 degree
intervals. Looking at the Earth from
the equator, each orbit is moderately tilted
at 50 degrees. .