LiDAR
LiDAR is the most cost effective method of capturing detailed height data both, of the ground and of features on the ground. It is ideal for generating digital elevation models and contours, and mapping infrastructure such power-lines, and corridors such as proposed pipeline, rail and road routes.
Please refer to our glossary for a more detailed description of exactly what LiDAR is and how it works.
Terranean’s LiDAR scanner, the Toposys Harrier 56G3, provides a new paradigm in the collection of detailed terrain data and introduces a highly competitive LiDAR service into Australia that is capable of both very detailed terrain mapping and modelling of features on the terrain.
High definition representation of an open cut mine site
Flood Risk Mapping
The technology has a very high pulse rate and can measure up to 30 points per square meter making it ideal for mapping infrastructure such power-lines, and corridors such as proposed pipeline, rail and road routes.
Power-line with clear definition of wires and vegetation
The ability to measure such high densities of points allows the accurate collection of features such as power-line wires even at high flying speed meaning more information at lower costs.
A high pulse rate also ensures that in rough or vegetated ground that a maximum of points reach the ground which means a more accurate DEM and contours. Lower pulse rates run the risk of picking up vegetation or a fence post as a mistaken ground point and thereby distorting the resultant terrain model.
Photographic and 3 dimensional view of vegetation
The Harrier 56/G3 also has full wave form digitising capability meaning that vegetation can be modelled in 3 dimensions for applications such as forest management, bio-mass calculation and bush fire fuel load determination.
Surface model of the tree heights of a forestry plantation
The scanner is also synchronised with a Rollie digital aerial camera and captures the same footprint, enabling terrain data and imagery to be captured in the one flight sortie, thereby reducing costs and providing a high quality digital orth-ophoto that is totally integrated with the height model. The laser pulses are also 100% eye safe at any flying height which is an increasing issue on safety conscious sites.
Integrated digital photography and terrain model