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Construction Tech Review | Tuesday, January 07, 2020
LIDAR opens the floodgates for an entirely new range of creative possibilities when it comes to innovation and planning.
FREMONT, CA: There are no second thoughts that drones have wholly integrated themselves into the everyday lives of people and that of industries around the globe. The latest technologies are being implemented and developed all the time to help in bringing new opportunities to businesses and projects, with LIDAR being one of the primary technologies.
LIDAR, which is a drone-based technology, is used to help the construction project managers to complete a task accurately. It also helps in capturing incredibly high-quality elevation data that are precise and brings exact measurements. LIDAR stands for Light Detection and Ranging makes use of sensors that emit laser beams. It is shot down to the ground to bounce back, which is then measured, as well as recorded. The technology is presently used for creating detailed 3D maps and models of landscapes, and human-made objects.
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Photogrammetry has been a part of the industry to carry out specific tasks while surveying areas. Nevertheless, the two methods are very different. Photogrammetry uses photographs to measure the distance between two different points, whereas, on the other hand, LIDAR uses lasers, which results in more accurate reading.
LIDAR helps in going far beyond identifying when the vegetation appears on the ground and how dense it is, which was not possible with the previously existing methods and required countless man-hours to incorporate that information into planning.
Nonetheless, LIDAR is considered to be in the limelight because of the level of accuracy it provides. A LIDAR drone, in high-fidelity modes, can record detailed information of nearly 100-500 data points per square meter with a striking accuracy of 2-3 centimeters, which was previously unfathomable.
While surveying an area of land, the drone operator needs to make sure that a flight plan is developed so that they can acquire an ample number of overlaps to cover the ground adequately. The operator should also ensure that the lasers can penetrate the vegetation ground accurately and appropriately. Factors such as altitude, speed, and line spacing, as well as others like weather conditions and structures within the area, are considered when a LIDAR drown flies down to work. While using LIDAR technology, it is crucial to ensure that it is being used cost-effectively, as a LIDAR technology has proved itself to be useful in both one-time applications and extensive, long-term projects.
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