Investor Presentaiton
methods
TLS
TLS #1: TOPCON GLS-1500
a medium-range scanner
max. distance: 500 m
max. frequency: 30,000 pts/s
range accuracy: 4 mm @150 m
weight: 16 kg (body) + batteries
TLS #2: Trimble TX5
a short-range scanner
max. distance: 120 m
max. frequency: 900,000 pts/s
range accuracy: 2 mm @25 m
weight: 5 kg
ā¢
.
UAV
DJI Phantom 2+ NIKON COOLPIX A;
Phantom 3 Professional/Advanced;
Phantom 4; Mavic Pro; Mavic 2 Pro;
Single-point
positioning GNSS unit
post processing
Digital camera
SfM-MVS photogrammetry
by PhotoScan
500-1,000 photos for each time
positioning accuracy 1: camera-mounted GNSS, >1 m
positioning accuracy 2: GCP by PPK-GNSS (fix solution)
(Trimble GeoXH), 13.4 14.9 mm (14.4 mm RMS)
TLS + UAV
.
further aligned by ICP
- UAS dense cloud ā TLS cloud
- CloudCompare / Trimble RealWorks
- cloud-based registration (ICP), errors: 25.1 39.7 mm
10 m
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