Have you ever been curious about how Light Detection and Ranging (LIDAR) collects data? It's an intriguing process that involves the use of sensors to detect the reflections of a pulsed laser beam. In this article, we'll uncover the science behind LiDAR and how it is used to create 3D models of the world around us.
What is LiDAR?LiDAR is an acronym for Light Detection and Ranging. It works by sending out laser light from a source (transmitter) and measuring the reflected light from objects in the environment.
The system receiver then detects the reflected light and uses the time of flight (TOF) to generate a distance map of the objects in the scene.
How is LiDAR Used?3D at Depth, a global provider of advanced subsea LiDAR solutions, has been instrumental in validating the LiDAR market for the upstream oil and gas industry. Nowadays, LiDAR is widely employed to create a three-dimensional model of the world surrounding the LiDAR sensor. By sending out repeated pings, a LiDAR device can also measure how nearby objects move, their speed, and whether they are facing the LiDAR device or not.
This technology is essential for autonomous driving, and some LiDAR systems are now available for advanced driver assistance systems (ADAS).
What Types of Data Does LiDAR Collect?LiDAR systems take advantage of this technology and use LiDAR data to map three-dimensional models and digital elevations. Topographic LiDAR uses a near-infrared laser to map terrain and buildings, while bathymetric LiDAR uses green light that penetrates water to map the seabed and riverbeds. In conclusion, LiDAR is an incredibly powerful tool that can be used to collect data from a variety of sources.
From mapping terrain to measuring object movement, this technology has revolutionized how we view our environment.