Lidar is a common remote sensing method that can be used to measure the precise distance of objects on the Earth's surface, according to access control lidar manufacturers. Access control lidar manufacturers found that although lidars were first installed on aircraft in the 1960s, they didn't gain popularity until 20 years later. GPS only became a common method for calculating precise geospatial measurements after its introduction in the 1980s. Now, its application range has been extended to many fields.

Access control lidar manufacturers introduce the types of lidar
According to access control lidar manufacturers, lidar systems are divided into two categories: airborne lidar and ground lidar according to their functions. Airborne lidars are mounted on helicopters or drones to collect data. When activated, the airborne lidar fires a laser at the ground, which returns to the sensor as soon as it hits an object, giving an accurate distance measurement.
Airborne lidar is further divided into topological lidar and bathymetric lidar. Unlike airborne, terrestrial lidar systems are mounted on moving vehicles or tripods on the Earth's surface to collect accurate data points.
Access control lidar manufacturers have found that such radars are common in monitoring roads, analyzing infrastructure, and even collecting point clouds from inside and outside buildings. The ground lidar system is further divided into mobile lidar and static lidar.