... author’s own state-change threat-detection algorithms have seen satellites enter into geosynchronous graveyard orbits and ‘play dead’, while their orbital elements actually improve with time, showing that they are still controlled and...
... transportation services following deployment from a launch vehicle. This can include the movement of GEO satellites to a graveyard orbit, or bringing them into use, as well as moving healthy LEO satellites from a poor deployment position to a useful...