The 3D accuracy of the coordinates of a tag depends on 3 main factors:

• How precisely the dielectric constant was calibrated, as this determines...

The 3D accuracy of the coordinates of a tag depends on 3 main factors:

• How precisely the dielectric constant was calibrated, as this determines the translation between signal velocity to the distance travelled by the radar wave; otherwise said, the correctness of the calculated depth
• How precise the GNSS position quality was when the measurement happened, as this determines how reliable the calculated 2D position and ground zero value are
• If the set coordinate system is the expected one, as this will make the digital finding match the existing cartography or not, no matter how precisely it was measured.

Considering all non-human sources of error combined, Proceq GS8000 can provide reliable 3D results on a sub-decimeter range under standard conditions.