Seisland

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LiDAR

Light detection and ranging (LiDAR) is a proven technology to collect accurate 3D data and create digital terrain models and digital elevation models. LiDAR provides a standard accuracy of 30 centimetres for the vertical component (on flat hard surfaces) and 45 centimetres for the horizontal component, both at 95 percent probability. Typically, the data collection is carried out from a fixed-wing aircraft or helicopter.

In areas with poor GNSS signals, Seisland uses data from existing LiDAR surveys, where available, to interpolate elevations from its GNSS survey to elevations on the grid.