Lidar services are used in various applications, which include areas like real estate development, mapping flood risk, urban modelling, or modelling coastal zone, for gas and oil exploration, planning pipeline corridor or for power line transmission and also in restricted areas where access is prohibited.
The lidar 3d mapping is used by creating the air-mounted lasers to send millions of pulses every second. The reflected signal is then detected, which is eventually used in measuring plane elevation from the surface. The device is placed accurately to point towards the plane to get all the measurements clearly and without any fault.
Since mapping innovation has reached to such heights, that it is possible to collect all data at 400 square miles in just 12 hours by using various reference points. This kind of mapping service actually replaced the traditional system, which was slow and was not so accurate.
Mapping has the function of using GPS (Global Positioning System) to correlate elevation and location. If you want to understand how the data is collected then read on. It is actually stored in three coordinates, x- longitude, y- latitude, and z-elevation. After collecting of information, which is done by the aircraft, a layout is brought out, which is computerized through the land that is referred to as DEM or digital elevation mode. The DEM eventually helps in illustrating the lines or the various contour linking points that share the same elevation.
Thus, a proper measurement and detection of elevation is chalked out with mapping services. Understanding functions of mapping companies is a much better option in future advancement.