A rover walks the site while GNSS satellites stream signals to it and to the base station. Watch the plotted track scatter in red — then apply the base-station correction and see every fix snap onto the true path.
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Base station (known point)
Rover antenna
Uncorrected fixes (±3.5 m)
RTK-corrected fixes (±1 cm)
AUTONOMOUS — uncorrected | accuracy ±3.50 m
Both receivers track the same satellites; atmospheric and orbit errors scatter the rover’s stand-alone fixes across several metres — the red trail.
The base station never moves: it sits on a benchmark whose coordinates are precisely known, so it can compute the error in every signal in real time.
Apply the correction: the data link streams to the rover and every plotted fix lands within about a centimetre of the true walked path — the green trail.
Orbit the scene while it runs — this is exactly how RTK boundary, pillar-fixing and control surveys work in the field.
Stylized real-time simulation. Real RTK work uses dual-frequency GNSS receivers with radio or GSM correction links, delivering ±(8 mm + 1 ppm) horizontal accuracy.