Airborne Mapping

Airborne LiDAR

DEPHOS Group deploys the latest in high-precision airborne LiDAR (light detection and ranging) survey sensors either on their own, or simultaneously with an aerial camera. Through a mechanism known as laser scanning, LiDAR sensors collect hundreds of thousands of three-dimensional survey points, every second. The laser sensor on these systems oscillates or spins while emitting light pulses at frequencies of up to 500kHz. The LiDAR system is tightly coupled to an inertial navigation system (INS), which dynamically georeferences any data collected by the LiDAR with real-world coordinates. The time that each individual light pulse that is emitted by the LiDAR takes to hit the ground and return to the sensor is measured and a 3D coordinate of the location that the pulse hit the ground can then be computed. These sensors are especially useful for mapping vegetation clearances along powerlines and areas covered by dense vegetation.