Executive summary

Global navigation satellite systems (GNSS), which were originally designed to provide positioning, velocity and timing services for terrestrial users, are now also being increasingly utilized for autonomous navigation in space. Historically, most space users have been located at low altitudes, where GNSS signal reception is similar to that on the ground. More recently, however, users are relying on these signals at high altitudes, near to or above the GNSS constellations themselves.

Sustainable Development Goals:

Industry, Innovation and Infrastructure