“ Heihe River Ecological hydrological remote sensing experiment "takes Heihe River basin with the distinctive characteristics of alpine and arid areas as the experimental area. The basin is located between 97.1-102.0 ° E and 37.7-42.7 ° n. It is the second largest inland river basin in China. It originates from the middle section of Qilian Mountain, extends to the border between China and Mongolia in the north, borders Shiyang River Basin in the East and Shule River Basin in the west, with a total area of 143000 km ²， On August 25, 2012, lidar aerial remote sensing flight test was carried out in the transect observation area in the upper reaches of Heihe River by using Yun 12 aircraft and als70 produced by Leica company, in order to obtain DEM and other data in the observation area
The radar model is Leica als70, the maximum flight altitude of the system is 5000m (AGL), the maximum scanning angle is 75 °, the built-in digital camera records the echo intensity of 1, 2 and 3 times, the laser wavelength is 1064nm, and multiple echoes (1, 2, 3 and the last time). The absolute flight height in the sample area is 5200m (the lowest point on the ground: 2660m, the highest point on the ground: 4307m), and the average point cloud density is 1 point / m2
This data is the original observation data without manual processing
Good data quality
This work is licensed under a
Creative
Commons Attribution 4.0 International License.
CSTR:11738.11.ncdc.Westdc.2021.813
10.12072/ncdc.westdc.db3559.2023