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Lidar Surveying: THE FACTS and Who Uses It?
Light detection and ranging (Lidar) surveying measures scattered patterns of light to detect the data properties of distant objects. Also called laser pulse technology, Lidar is a form of laser surveying that is typically used for surveying buildings, large objects, and spacious environments that other laser scanners are not capable of accurately reading. However, because Lidar can be used to assemble precise data but not infinitesimal data, other laser scanners are sometimes attached to the top of large scanning subjects at various stations when such data is necessary.

Applications for Lidar Surveying

Lidar surveying-also referred to as time-of-flight surveying-has several applications. In each case, a time-of-flight scanner that runs on the laser rangefinder to measure the round-trip of a laser from the scanner to the scanning subject and back is used. Below, we list and discuss a few of these applications, beginning with archaeology.

Archaeology

In archeology, Lidar surveying can be used for the next applications, amongst others: the planning of field campaigns, the mapping of features beneath forest canopy, and providing overviews of large, continuous features which are invisible on the ground. In Additional info , Lidar also aids archeologists in creating digital elevation models that reveal structures and landscape elements that are hidden from sight by vegetation. Its ability to penetrate vegetation, aswell its ability to gather data sets quickly and cheaply, is Lidar's most distinguishing features for archaeologists.

Aerial Surveying for 3D Mapping

Companies in the Remote Sensing field use time-of-flight scanners to gather data from natural and manmade terrains for the purpose of 3D mapping, which includes numerous uses, including: educational maps in print or virtual form, maps for military use, and comparative maps that show gradually changing topography. A time-of-flight scanner's capability to gather data quickly and inexpensively is especially useful for the latter application, which requires numerous surveying sessions over confirmed period of time.

Historical Preservation

Time-of-flight scanning can be used to gather data from buildings, terrains, and large objects of historical significance for restoration purposes. Where infinitesimal detail is also required, other scanners, such as triangulation scanners, are used as well.


Building Surveys

When a building is scheduled for rehabilitation, gathering its spatial data can be critical for both design contemplation and carrying out a proposed design. Similarly, when a new building will be erected, gathering the data of its surrounding environment can be imperative to completing a design whose aesthetic and size parameters sync with neighboring structures and objects.

Tripod mounted time-of-flight scanners are expensive, often costing $100,000 or more. As a result, many companies with Lidar surveying needs choose to hire a professional laser scanning provider instead of buying their very own equipment. In comparison to traditional surveying methods, laser surveying drives down survey costs in 3 ways: shortening the survey process, using less materials, and producing data results that may be edited by the client minus the provider's assistance.

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