Curious about how airborne LiDAR works? Want to deepen your understanding of this cutting-edge technology? Whether you’re just starting or looking to level up your knowledge, Neon Science’s 7-minute video is your perfect guide.
One commenter said: “As a geoscientist working a lot with ALS I commend this video so much. Most of our highly demanding clients that have stolen our specs have no idea.”
Watch it and then see you if you can answer these questions.
What Nadir and off-Nadir mean?
What is IMU is and why it matters?
What kind of light lidar systems use?
How GPS plays a crucial role in the process?
If you need some reminders, we have some answers below.
https://www.youtube.com/watch?v=EYbhNSUnIdU&t=4s
- Nadir and Off-Nadir – These terms refer to the angle of the LiDAR sensor. Nadir is the point directly below the sensor, while off-nadir refers to any angle other than directly downward. Off-nadir views are important for capturing more detailed data, especially in areas with dense vegetation.
- IMU (Inertial Measurement Unit) – The IMU is a key component that tracks the sensor’s movement and orientation in space. By measuring pitch, roll, and yaw, the IMU ensures that LiDAR data is accurately georeferenced, which is essential for precision in mapping and modeling.
- What kind of light does LiDAR use? – LiDAR systems use ultraviolet, visible, or near infrared light, which allows them to capture accurate data through vegetation and other obstacles. This wavelength is ideal for creating detailed 3D models of the terrain.
- The role of GPS – GPS provides the geospatial data necessary to position the LiDAR sensor in real time. It helps ensure that the collected data is accurately mapped to the correct geographic location, allowing for precise measurements and analysis.
Now, Are You Fluent in the Language of Lidar? Thanks to Neon Science for this deep dive!
