TY - Data T1 - Heihe River eco hydrological remote sensing test: Airborne Lidar raw data set of the core test area in the middle reaches of Heihe River Basin (2012) A1 - Xiao qing A1 - Wen jianguang DO - 10.12072/ncdc.nieer.db3483.2023 PY - 2021 DA - 2021-09-14 PB - National Cryosphere Desert Data Center AB - On July 19, 2012, lidar aerial remote sensing flight test was carried out in the core observation area of the middle reaches of Heihe River by using Yun 12 aircraft and als70 produced by Leica company. The als70 laser wavelength was 1064nm, and multiple echoes (1, 2, 3 and the last) were recorded. The absolute flight height in the middle reaches is 2700m (1412m at the lowest point on the ground and 1655m at the highest point on the ground), and the average point cloud density is 4 points / m2. Through the steps of parameter calibration, automatic classification of point cloud and manual editing, DSM and DEM data products are finally formed. DB - NCDC UR - http://www.ncdc.ac.cn/portal/metadata/6e3cf166-10ea-492b-af3d-0462e5eee39c ER -