LiDAR technology is a powerful tool for mapping and surveying the environment. It utilizes laser light to measure distances and create 3D models of objects in the scene. In this article, we will explore how LiDAR transmits data and how it can be used to measure elevations, detect motion, and more. LiDAR works by sending laser light from a source (transmitter) and detecting the reflected light from objects in the scene.
The system receiver measures the time of flight (TOF) of the light, which is used to generate a distance map of the objects in the scene. When an aircraft is in flight, LiDAR units scan the ground from side to side. While some pulses will be directly below the nadir, most pulses travel at an angle (outside the nadir). To accurately measure elevation, LiDAR systems take into account the angle of the pulse.
3D at Depth, a global provider of advanced subsea LiDAR solutions, has been at the forefront of validating LiDAR technology for use in the upstream oil and gas industry. With repeated pings, LiDAR devices can also detect motion and determine whether objects are facing the device or not. Topographic LiDAR typically uses near-infrared laser light to map land surfaces, while bathymetric LiDAR uses green light that penetrates water to measure elevations of seabeds and riverbeds. So where can you find LiDAR data? Here's a list of the top 6 free LiDAR data sources so you can start your search.
Therese Reinsch explains that when a LiDAR system collects data, it doesn't rank which points are affecting what. LiDAR data transmission is an incredibly useful tool for surveying and mapping environments. It can be used to measure elevations, detect motion, and more. With access to free LiDAR data sources, anyone can start exploring this powerful technology.