| Description |
These lidar point clouds and images cover, in high detail, the terrain at Great Sippewissett Marsh, Cape Cod, MA on November 2nd, 2022. USGS researchers tested different sensors that collected lidar and images for photogrammetry point cloud data using Uncrewed Aerial Systems (UAS) to look at differences in coverage and elevation accuracy. The lidar data were acquired with a YellowScan Mapper lidar scanner, which consists of the Livox Horizon scanner and Applanix 15 inertial measurement unit; and a YellowScan VX20-100 lidar scanner, which consists of the Riegl minivux-1uav scanner and Applanix 20 inertial measurement unit. The YellowScan Mapper Sony UMC-R10C camera and a Ricoh GRII camera were used to take photos for structure from motion processing and to compare point clouds. The lidar data was post-processed to a R8s Trimble base station. Smart AeroPoint ground control points (GCPs) and ground truthing GPS points were used for vertical validation. [More]
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