Mobile mapping is a well-established production method in Terratec, and is a highly efficient method to collect extensive data.
Terratec AS offers mobile mapping through our two systems:
* Optech LYNX SG1
* ViaTech System (Z&F profiler, ViaIRI, and ViaPhoto)
With laser scanners mounted on the rear of our vehicles, we can collect millions of points per second at speeds of up to 80 kilometres per hour. The points are georeferenced with the aid of GNSS and IMU as well as land surveyed control points on the ground. Together they make up a detailed point cloud well suited for mapping 3D vector objects, and as a basis for creating a terrain model (TIN).
The sensors are optimal for collecting large amounts of data in a short amount of time, particularly in areas that are difficult to access with traditional land surveying methods, E.G. busy streets, operational airports, tunnels, railways, city centres etc. Using this data capture method, data can be collected without the need to disturb traffic or close road lanes.
Laser scanning using mobile mapping gives accurate and detailed data of an area. This is further processed in the office to form the basis of several products.
The video below demonstrates the mobile mapping of Bislett stadium in Oslo before laying down a new running surface. We delivered a surface model that shows deviations from a theoretical ideal surface.
Mobile mapping can be done in several ways. We drive our vehicles on roads, in tunnels, in mines, and inside buildings. We place the vehicle on flat railway cars to map railways, and barges to scan waterfronts. In the video below, we scan the waterfront of Stockholm. In addition, we have scanned the entire road network of Stockholm, a major project with a total of nearly 4000 km of road and coast scanned.
Images and video are also recorded while scanning. These are very useful for documentation, planning, and as a practical replacement for site reconnaissance. Panoramic images offer 360-degree views, and we can implement them in a web-based viewer which facilitates visualisation of a site from the office.