Lasers - UAF Airborne Scanning LiDAR
UAF Airborne Scanning LiDAR
(various UAF aircraft)
These photos show the UAF LiDAR as installed inside the aircraft (top) and the exterior viewing portal on the bottom of the plane (bottom).
University of Alaska-Fairbanks (UAF) carries out surveys of glaciers in Alaska as part of Operation IceBridge. Their chief instrument is a compact scanning laser altimeter that can fly on smaller aircraft such as the DeHavilland DHC-3 Otter. This laser altimeter collects 10,000 data points per second and has a scan angle of 30 degrees to either side from straight down, which gives a swath width roughly equal to aircraft height. This instrument is flown at a maximum of 1500 feet, though lower and slower flights can yield higher density swaths.