In many applications the light beam is moved or scanned to get several points of reflection, this data is often displayed in a three dimensional array known as a “point cloud”. These measurements can be used to calculate the distance to the reflecting object as well as some information regarding its reflectivity. Several aspects of the signal are measured including the light intensity and angle. LIDAR functions by sending out a light beam and measuring its reflected signal. Some publications use the letter “L” in “LIDAR” to mean “Laser” although a LIDAR unit can be built using light sources other than a laser. It works very much like RADAR and in fact the mnemonic “LIDAR” was initially a fusion of the words “RADAR” (Radio Detection And Ranging) and “Light”.Ī more common definition of “LIDAR” is Light Inspection, Detection and Ranging, this more accurately defines LIDARs role in inspection applications. LIDAR is a method of using focused light beams to detect distant objects. ![]() So follow along and learn how you can bring cutting edge technology like LIDAR to your own robotics projects. The folks at DFRobot have a number of low cost LIDAR devices available and they were kind enough to supply me with a couple of them. ![]() LIDAR may seem like a sophisticated system and it is, however recent cost reductions have made it possible for experimenters like you and me to work with LIDAR for our own projects.
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