LiDAR technology or 3D laser scanning was established during the 1960s for users to find plane submarines in the sea. This technology is otherwise Airborne LiDAR System and Ground-based LiDAR.
Airborne LiDAR system is a process that shoot laser light onto the glass and the light on down to the surface of the ground, from the air, most used light aircraft or a helicopter to shoot. Laser light scanning from side to side while the aircraft flew over the area where they work exploration that it can capture the range of 20,000 to 150,000 points per second.
When the laser light shot anything, it will affect the back glass. A laser shot out of the plane and when it is reflected back is recorded compounded combined with other data to create a three-dimensional terrain, including the format of the terrain. Using Airborne LiDAR system they can wipe out the buildings and other objects on the terrain to be able to see Geological characteristics of the soil at the bottom.
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Ground-based LiDAR systems, similar to the Airborne LiDAR, but it makes up most of the ground surface by LiDAR has been installed on a pedestal and LiDAR sensor, turn 360 degrees. Laser light shot out of the Ground-based LiDAR systems will come back from the front surface of the plant buildings lighthouse Car trees, including humans. The light reflected back is recorded, and the distance between the sensor and the object light shot has already been calculated. Data collected can create a three-dimensional area of study.
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Usually two LiDAR system on the use of tools such as laser specialized device receives GPS signals IMU (inertial measurement unit), but for the Ground-based systems do not use tools IMU. Airborne systems generally use planes or helicopters to collect data on the wide area.
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