We build the ground station twice — once on the roof, and once as a telemetry-linked 3D twin. Photogrammetry, lidar and 3D modelling capture the site to the centimetre; ephemeris engines drop every satellite into the same sky.
The real dish and its virtual counterpart move as one — identical azimuth, elevation and skew, live. That turns the twin into a rehearsal stage: DAVE flies the whole mission, finds every obstruction, and refines the design before the physical antenna ever moves.