Geometric accuracy investigations of terrestrial laser scanner systems in the laboratory and in the field

Abstract This paper summarizes recent research into current terrestrial laser scanners undertaken by the HafenCity University Hamburg and gives an assessment of geodetic accuracy latest generation scanners. Three separate independent test methods are presented to investigate geometric under laboratory conditions: (a) distance measurement b/w targets spheres on 20-m comparator track, (b) comparison spatial distances in 3D field targets, (c) investigation flatness deviation following guideline VDI/VDE 2634 (VDI/VDE 2012) a flat stone slab. The were tested lab: Leica BLK360 (2017), RTC360 (2019), Z+F IMAGER 5016 (2019, 2020), 5010 (2020), Faro Focus X330 (2020). reference measurements realised with Absolute Tracker AT960 (2017, 2020) TS60 total station (2019). results tests show very small deviations range 1–2 mm for most scanners, thus corresponding manufacturer’s specifications. In addition, five accordance instruction sheet 7-2014 German Society Geodesy, Geoinformation Land Management (DVW) standardised testing outdoor area Hamburg. For execution procedure, only standard equipment software respective manufacturers used. entire including data acquisition evaluation, was completed within 4 5 h each scanner. As expected, no significant or angle detected any systems, so that ready-to-use, taking account volume recorded.