Light detection and ranging (lidar) point clouds collected from unmanned aircraft systems

The data consist of point clouds containing 3D spatial coordinates (eastings, northings, and heights) and intensities (a measure of the strength of the backscattered laser pulse) in the American Society for Photogrammetry and Remote Sensing (ASPRS) LAS file format: http://www.asprs.org/wp-content/uploads/2019/03/LAS_1_4_r14.pdf. The locations for which data were collected include: 1) Intersection of HWY 99W and Newberg-Dundee Bypass, Dundee, OR (collected during construction of the bypass); 2) McNary field on the Oregon State University campus; and 3) NE 45th Street and Mary Gates Memorial Dr NE, Seattle, WA. The data are intended for research purposes. The data were collected using two different lidar systems: 1) Velodyne VLP-16 (Newberg-Dundee and OSU McNary field sites), and 2) Phoenix Lidar Systems MiniRanger, incorporating Riegl miniVUX-1UAV lidar (Seattle site). The Velodyne VLP-16 data were georeferenced using a combination of OxTS RT Post Process and custom MATLAB scripts, which are described in the project report. The Phoenix Lidar Systems MiniRanger data were georeferenced by first post-processing the trajectory using Inertial Explorer and then generating the point clouds using Phoenix LiDAR Systems SpatialExplorer v4.0.3. Additional metadata are provided in the “metadata.txt” files available on the FTP site.