黑河生态水文遥感试验：黑河流域中游核心试验区机载激光雷达DSM点云数据

2012年7月19日，在黑河中上游的核心观测区域，利用运12飞机，搭载Leica公司ALS70,开展了lidar航空遥感飞行试验。ALS70激光波长为1064纳米，多次回波（1,2,3和末次）。中游地区飞行相对高度1500米（海拔高度2700米)，平均点云密度4点/平方米。通过参数检校、点云自动分类和人工编辑等步骤，最终形成DEM和DSM数据产品。

On July 19, 2012, a lidar airborne remote sensing flight test was conducted in the core observation area of the upper and middle reaches of the Heihe River, using a Y-12 aircraft equipped with the Leica ALS70 system. The ALS70 has a laser wavelength of 1064 nm and supports multiple echoes (1st, 2nd, 3rd and final return. The relative flight altitude during the flight over the middle reaches was 1500 meters, with the local elevation at 2700 meters, and the average point cloud density reached 4 points per square meter. Through procedures including parameter calibration, automatic point cloud classification and manual editing, the final DEM and DSM data products were generated.