... a study in kinematic GNSS

Simulation of satellite orbits

These three videos simulates GNSS satellites flying around the Earth. The first one is showing 24 GPS satellites, the second show 30 Galileo satellites and the last one show the combined version.

The time shown to the top left indicates sidereal days. The GPS constellation repeats itself every 1 sidereal day and the Galileo constellation repeats every 8 sidereal day. Repeat means, that the constellation will be the same standing on the surface of the Earth.