On August 28, 2012, lidar aerial remote sensing flight test was carried out in Qilian observation area in the middle and upper reaches of Heihe River by using Yun 12 aircraft and als70 produced by Leica company. The als70 laser has a wavelength of 1064nm and multiple echoes (1, 2, 3 and last)
The absolute flight altitude in Qilian area is 4800m, the highest point on the ground is 3009m, the lowest point on the ground is 2726m, and the average point cloud density is 1.6 points / m2. Through the steps of parameter calibration, automatic classification of point cloud and manual editing, DSM and DEM data products are finally formed
The als70 laser has a wavelength of 1064nm and multiple echoes (1, 2, 3 and last)
The absolute flight altitude in Qilian area is 4800m, the highest point on the ground is 3009m, the lowest point on the ground is 2726m, and the average point cloud density is 1.6 points / m2
Through the steps of parameter calibration, automatic classification of point cloud and manual editing, DSM and DEM data products are finally formed
Good data quality
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CSTR:11738.11.ncdc.NIEER.2021.1875
10.12072/ncdc.nieer.db2998.2023