Light Detection and Ranging (LIDAR) is a remote sensing method that uses light from a pulse laser to examine the surface of the Earth. This image is data collected by the National Oceanic and Atmospheric Administration (NOAA) of lower Manhattan, New York. As you can see, the light pulses generate a three-dimensional structure of the city's surface and its characteristics. Mappers study LIDAR maps for natural and man-made environments. In fact, this model was created in October 30, 2001 by NOAA after September 11 so that the 3-D images of the site can help crew recover and clean up the area. This image help them pinpoint structures, and identify the height of the buildings so they can measure cranes to remove it.
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