TY - Data T1 - Heihe River eco hydrological remote sensing experiment: surface feature spectral data set in the middle reaches of Heihe River Basin (2012) A1 - Xiao qing A1 - Ma mingguo DO - 10.12072/ncdc.nieer.db3503.2023 PY - 2021 DA - 2021-08-31 PB - National Cryosphere Desert Data Center AB - During the middle reaches aerial remote sensing test in 2012, the black-and-white cloth spectrum observation was carried out simultaneously during the flight, and the ground object spectrum observation was carried out for the typical underlying surface of the middle reaches before and after the flight, so as to provide the basic data set for the preprocessing of CASI, Sasi and TASI aerial flight data. Observation instruments: svc-hr1024 ground object spectrometer of Institute of remote sensing, Chinese Academy of Sciences (350-2500nm) and ASD field spec 3 ground object spectrometer of earth observation center, Chinese Academy of Sciences (350-2500nm), reference plate. Measurement method: measure the radiance of the reference plate vertically before measuring the ground object, and then measure the radiance of the ground object vertically. After measuring the ground object, measure the radiance of the reference plate again. Data content: this data set includes the original spectral data exported by the spectrometer, the recorded data of SVC spectrometer . Sig (can be opened with svc-hr1024 supporting software or directly with Notepad), and the recorded data of ASD spectrometer . ASD. It also includes observation position information, record form, etc. Observation time: On June 15, 2012, SVC spectrometer observed various typical features in EC matrix On June 16, 2012, SVC spectrometer observed wetland station On June 29, 2012, ASD spectrometer observed super station and Gobi station, various vegetation types and bare soil, etc On June 29, 2012, ASD spectrometer and CASI flight synchronously observed black and white cloth On June 30, 2012, ASD spectrometer observed desert vegetation and bare soil in the middle reaches of the transect On July 5, 2012, ASD spectrometer and CASI flight synchronously observed black and white cloth On July 7, 2012, ASD spectrometer carried out the daily variation observation of corn spectrum at Daman super station On July 8, 2012, ASD spect DB - NCDC UR - http://www.ncdc.ac.cn/portal/metadata/08e8c52f-72de-4dae-ade7-625cd92a270f ER -