Point cloud intensity of Jurassic cliffs at Nash Point
Laser scanning (Terrestrial laser scanning / LIDAR) enables the rapid collection of highly detailed point clouds over the area of interest. TerraDat uses the Topcon GLS-1500 scanner that is equipped with a 2 megapixel camera enabling true colour rendering of the survey data accurate to 4mm on targets up to 150m away, and a maximum range of 300m at 90% reflectance. We have recently researched solutions for automatically converting laser scan point clouds into maps of geological joints and fractures that can then be plotted in traditional stereonets for geotechnical design and modelling.
Other applications for laser scanning include:
- Quarry stockpile volume estimates
- Geological structure mapping of quarries for structural analysis
- As-built surveys of bridges and civil structures
- 3D models of heritage buildings combined with GPR to investigate internal wall properties
- Forensic investigations for police and transport authorities
- Topographical surveying for archaeological sites
- Detailed interior and exterior scans of buildings for microgravity terrain corrections
Topcon GLS-1000 in action on the Heritage Coast
Laser scanning is a relatively new technology and we emphasise the importance of focusing on the deliverables rather than how they are obtained. Typical deliverables from these types of survey can include: CAD elevation drawings, 3D vector models of lineations on the target, volume estimates, DTMs (digital terrain models), contour maps and animations.
FREE LASER SCAN? If you would like us to do a demonstration on your site using our laser scanner, we will be happy to come along and acquire some data for you on a no obligation basis.
Further information is available at our dedicated scanning site: http://www.getlaserscanning.com