Lidar is a method for determining ranges by targeting an object or a surface with a laser and measuring the time for the reflected light to return to the receiver.
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33 Facts About Lidar
2.
Lidar is an acronym of "light detection and ranging" or "laser imaging, detection, and ranging".
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3.
Lidar is commonly used to make high-resolution maps, with applications in surveying, geodesy, geomatics, archaeology, geography, geology, geomorphology, seismology, forestry, atmospheric physics, laser guidance, airborne laser swath mapping, and laser altimetry.
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4.
Lidar uses ultraviolet, visible, or near infrared light to image objects.
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5.
Lidar instruments fitted to aircraft and satellites carry out surveying and mapping – a recent example being the U S Geological Survey Experimental Advanced Airborne Research Lidar.
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6.
Lidar determines the distance of an object or a surface with the formula:.
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7.
Lidar sensors mounted on mobile platforms such as airplanes or satellites require instrumentation to determine the absolute position and orientation of the sensor.
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8.
Lidar uses active sensors that supply their own illumination source.
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9.
Lidar is useful in GNSS-denied situations, such as nut and fruit orchards, where foliage blocks satellite signals to precision agriculture equipment or a driverless tractor.
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10.
Lidar produces plant contours as a "point cloud" with range and reflectance values.
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11.
Lidar has many uses in archaeology, including planning of field campaigns, mapping features under forest canopy, and overview of broad, continuous features indistinguishable from the ground.
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12.
Lidar-derived products can be easily integrated into a Geographic Information System for analysis and interpretation.
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13.
Lidar can help to create high-resolution digital elevation models of archaeological sites that can reveal micro-topography that is otherwise hidden by vegetation.
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14.
In 2012, Lidar revealed that the Purepecha settlement of Angamuco in Michoacan, Mexico had about as many buildings as today's Manhattan; while in 2016, its use in mapping ancient Maya causeways in northern Guatemala, revealed 17 elevated roads linking the ancient city of El Mirador to other sites.
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15.
Lidar can detect high detailed canopy height data as well as its road border.
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16.
Lidar measurements help identify the spatial structure of the obstacle.
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17.
Lidar systems provide better range and a large field of view which helps detecting obstacles on the curves.
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18.
Lidar has been applied to estimate and assess the biodiversity of plants, fungi, and animals.
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19.
Lidar allows research scientists to not only measure the height of previously unmapped trees, but to determine the biodiversity of the redwood forest.
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20.
Lidar is used in structural geology and geophysics as a combination between airborne lidar and GNSS for the detection and study of faults, for measuring uplift.
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21.
Lidar technology has since expanded vastly in capability and lidar systems are used to perform a range of measurements that include profiling clouds, measuring winds, studying aerosols, and quantifying various atmospheric components.
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22.
Lidar can be used to measure wind speed and to provide information about vertical distribution of the aerosol particles.
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23.
Lidar has been widely used in rock mechanics for rock mass characterization and slope change detection.
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24.
Lidar technology is being used in robotics for the perception of the environment as well as object classification.
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25.
Lidar are widely used in robotics for simultaneous localization and mapping and well integrated into robot simulators.
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26.
Lidar is increasingly being utilized for rangefinding and orbital element calculation of relative velocity in proximity operations and stationkeeping of spacecraft.
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27.
Lidar has been used in the railroad industry to generate asset health reports for asset management and by departments of transportation to assess their road conditions.
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28.
Lidar has been used in adaptive cruise control systems for automobiles.
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29.
Lidar can be used to increase the energy output from wind farms by accurately measuring wind speeds and wind turbulence.
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30.
Lidar is used to characterise the incident wind resource for comparison with wind turbine power production to verify the performance of the wind turbine by measuring the wind turbine's power curve.
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31.
Lidar can be used to assist planners and developers in optimizing solar photovoltaic systems at the city level by determining appropriate roof tops and for determining shading losses.
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32.
Recent simulation racing games such as rFactor Pro, iRacing, Assetto Corsa and Project CARS increasingly feature race tracks reproduced from 3-D point clouds acquired through Lidar surveys, resulting in surfaces replicated with centimeter or millimeter precision in the in-game 3-D environment.
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33.
In Build the Earth, Lidar is used to create accurate renders of terrain in Minecraft to account for any errors in the default generation.
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