Airborne LiDAR [ASLMS]
The Airborne LiDAR, a short name for Airborne Sweeping Laser Measurement System, ASLMS is key component of the Power Line Maintenance Inspection System.
The core element of the Airborne LiDAR is a small laser device for detection and ranging of obstacles coupled to a rotating device that makes the laser beem sweep an angular section around. This technique is often known as LiDAR for Light Detection And Ranging.
The system is complemented with a GPS receiver to localise every range sample into world co-ordinates and, optionally, a sensor to measure attitude angles and accelerations that, depending on the technology used and features, may be termed, Inertial Measurement Unit (IMU), inertial navigation system (INS), Attitude and Heading Reference System (AHRS) or gyroscope. Most often the system includes some sort of video camera to give context to the range data and assist in the analysis of objects found in the scenes.
LiDAR Air System also comes up frequently associated with video cameras to capture images to help interpret the three-dimensional data and which give a texture to the scenarios.
Within the context of Power Line Maintenance Inspection, the Airborne LiDAR [ASLMS] is used for Track Clearance / Right-of-the-Way Inspection and all other issues related to 3D geometry around the line.
It can also be used to generate 3D models acquired from an aircraft.