TY - T1 - Under-canopy UAV laser scanning for accurate forest field measurements SN - / UR - http://hdl.handle.net/10138/316168 T3 - A1 - Hyyppa, Eric; Hyyppa, Juha; Hakala, Teemu; Kukko, Antero; Wulder, Michael A.; White, Joanne C.; Pyorala, Jiri; Yu, Xiaowei; Wang, Yunsheng; Virtanen, Juho-Pekka; Pohjavirta, Onni; Liang, Xinlian; Holopainen, Markus; Kaartinen, Harri A2 - PB - Y1 - 2020 LA - eng AB - Surveying and robotic technologies are converging, offering great potential for robotic-assisted data collection and support for labour intensive surveying activities. From a forest monitoring perspective, there are several technological and operational aspects to address concerning under-canopy flying unmanned airborne vehicles (UAV). To demonstrate this emerging technology, we investigated tree detection and stem curve estimation using laser scanning data obtained with an under-canopy flying U... VO - IS - SP - OP - KW - 4112 Forestry; Airborne laser scanning; UAV; Under-canopy flight; Stem volume; Stem curve; SLAM; TREE HEIGHT; STEM CURVE; SYSTEM; INVENTORY; LIDAR N1 - PP - ER -