LiDAR Technology - An Overview.

Light Detection and Ranging (LiDAR) data has proved to be useful in recent years since it gives information, such as item height and attributes, and statistics over large regions, and it all becomes available by capturing the intensity of backscattered pulses in addition to 3D coordinates. A LiDAR may generate a 2D angle image and a 3D picture containing angle/range information. It can directly measure range in each pixel since it controls when light is emitted, allowing it to calculate range based on the Time of Flight (ToF) to and from the object in a particular pixel. If there is enough signal, a 3D picture can also have grayscale and color. Coherent LiDAR can detect velocity quite precisely. A brief introduction of airborne laser scanning technology, also known as LiDAR, and research findings on its application in forest assessment and monitoring are discussed in this paper. [ABSTRACT FROM AUTHOR]