TY - Data T1 - Heihe River Ecological hydrological remote sensing test: Airborne Lidar DSM point cloud data in the core test area of the middle reaches of Heihe River Basin (2012) A1 - Wen jianguang DO - 10.12072/ncdc.nieer.db3485.2023 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 in the middle and upper reaches of Heihe River by using Yun 12 aircraft and Leica company als70. The als70 laser has a wavelength of 1064 nm and multiple echoes (1, 2, 3 and last). The relative flight altitude in the middle reaches is 1500 meters (altitude 2700 meters), and the average point cloud density is 4 points / m2. DSM data products are finally formed through the steps of parameter calibration, automatic point cloud classification and manual editing DB - NCDC UR - http://www.ncdc.ac.cn/portal/metadata/877b31b7-2ded-4122-82b1-c12aeb214fe0 ER -