Light Detection and Range (LiDAR) is a cutting-edge technology used to measure the elevation of features using lasers. It is collected from aircrafts using sensors that detect the reflections of a pulsed laser beam. To store the data, we can create a basic recording application that saves the frames of the RGB cameras and the depth maps obtained from the scanner. LiDAR systems take advantage of this technology and use LiDAR data to map three-dimensional models and digital elevations.
If you're looking for reliable sources of LiDAR data, you're in luck! There are several great resources available for finding LiDAR data. The Earth Explorer (USGS) is a great place to start your search. Simply enter 'LiDAR' in the search window on the Datasets tab or search for the checkbox under Digital Elevation. NOAA's Digital Coast LiDAR datasets also have LiDAR datasets available where users can use an FTP link to access the complete datasets in compressed point cloud LAZ format.
The Puget Sound LiDAR Consortium (PSLC) is another great resource for finding LiDAR data. Created in 1999, it is an informal group of local agency staff and federal research scientists dedicated to developing high-resolution public domain LiDAR topography and derivative products for the region. If you're looking for free LiDAR data sources, here's a list of the top 6:
- Earth Explorer (USGS)
- NOAA's Digital Coast LiDAR datasets
- Puget Sound LiDAR Consortium (PSLC)
- Coastal Topographic LiDAR
- Open Topography
- Open LIDAR
You should also consider whether you need raw or processed data, as well as whether you need a single dataset or multiple datasets. Additionally, you should consider whether you need a single point cloud or multiple point clouds. Once you've identified your needs, you can begin your search for the perfect dataset. You can use online resources such as Earth Explorer (USGS), NOAA's Digital Coast LiDAR datasets, and Puget Sound LiDAR Consortium (PSLC) to find datasets that meet your criteria. Additionally, there are several free sources of LiDAR data available such as Coastal Topographic LiDAR, Open Topography, and Open LIDAR. By following these steps, you can easily find the perfect dataset for your project.
With access to reliable sources of LiDAR data, you can create accurate three-dimensional models and digital elevations with ease.