Firstly, the acronym LiDAR can be simplified from an acronym into the following phrase: Light Detection and Ranging. But what exactly does that mean?
Picture a map of something: your hometown, state, country, or anywhere else. Cartography has found ways to indicate some levels of a third dimension — for instance making more rigid and higher altitude plains darker on the map. But There is still a limitation, which is that there is no way to display an object with three dimensions.
Whether it’s places on a map or even people in a city block, there is tons of three dimensional data that can be collected and used.