Accuracy assessment of RTK-GNSS equipped UAV conducted as-built surveys for construction site modelling
2020; Taylor & Francis; Volume: 53; Issue: 381 Linguagem: Inglês
10.1080/00396265.2020.1830544
ISSN1752-2706
AutoresSander Varbla, Raido Puust, Artu Ellmann,
Tópico(s)Robotics and Sensor-Based Localization
ResumoRegular as-built surveys have become a necessary input for building information modelling. Such large-scale 3D data capturing can be conducted effectively by combining structure-from-motion and unmanned aerial vehicles (UAV). Using a RTK-GNSS equipped UAV, 22 repeated weekly campaigns were conducted at two altitudes in various conditions. The photogrammetric approach yielded 3D models, which were compared to the terrestrial laser scanning based ground truth. Better than 2.8 cm geometry RMSE was consistently achieved using integrated georeferencing. It is concluded that the RTK-GNSS based georeferencing enables reaching better than 5 cm geometry accuracy by utilising at least one ground control point.
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