%0 Dataset
%T Heihe River eco hydrological remote sensing test: worldview-2dom data of 0.5m in Dayekou basin (may 2012)
%J National Cryosphere Desert Data Center
%I National Cryosphere Desert Data Center(www.ncdc.ac.cn)
%U http://www.ncdc.ac.cn/portal/metadata/5fa4fa8f-e313-4999-b3f6-7f16f903e749
%W NCDC
%R 10.12072/ncdc.nieer.db3533.2023
%A Ma mingguo
%K Remote sensing products;digital orthophoto DOM;GPS image control points
%X Through data programming, worldview-2 stereo pair data of Dayekou basin were obtained in mid May 2012. From July to August of the same year, the data of 27 GPS image control points and check points were measured on the basis of the basin GPS Differential geodetic control network. Based on the whole field GPS ground control points, the RPC file of worldview-2 image is corrected by using the digital photogrammetry software system. On the stereo model, 60 evenly distributed high-precision image connection points are matched through image automatic matching technology to quickly extract 1m and 2m digital elevation models (DEM) of Dayekou sub watershed in the upper reaches of Heihe River Basin.Based on the collinear condition equation and the principle of digital differential correction, the front view image in the stereo image pair is selected to generate the digital orthophoto dom of Dayekou basin