%0 Dataset
%T Heihe integrated remote sensing joint test: Landsat TM ground synchronous observation data set in biandukou encrypted observation area (March 17, 2008)
%J National Cryosphere Desert Data Center
%I National Cryosphere Desert Data Center(www.ncdc.ac.cn)
%U http://www.ncdc.ac.cn/portal/metadata/12933996-ec77-4ef2-bbec-c28026548ee3
%W NCDC
%R 10.12072/ncdc.NIEER.db1891.2022
%A Zhao Shaojie
%A Ren Huazhong
%A ZHao Tianjie
%A Pan Jinmei
%K Soil physical temperature;Freezing depth of soil;ASD spectrometer;soil moisture;Hand held infrared thermometer;CE318 solar spectrophotometer;Surface radiation temperature;Atmospheric optical thickness;Surface roughness;reflectivity;Ground synchronous observation;TM
%X On March 17, 2008, the ground synchronous observation test for Landsat TM was carried out in the biandukou intensive observation area. The purpose of the test is to explore the spatial variation characteristics and laws of sub-pixel spectrum of ground objects through the grid spectrum measurement results of ground objects, and analyze the spectral characteristics of ground objects in cold and arid areas. On this basis, it provides data for the spectral model database of typical ground object target and background model, and provides basic data for remote sensing image simulation and spatial scale conversion of remote sensing data. The measured parameters include: spectral data, surface temperature, atmospheric parameters, soil profile weight and water content (0-1cm, 1-3cm, 3-5cm), surface soil freezing and thawing depth and soil roughness. The time range is about 11:10-13:30. ASD FieldSpec frtm (Boulder, Co, USA) is used as the spectrum measuring instrument. The spectrum range is 350nm-2500nm. The spectral resolution is 3nm in the visible near-infrared band and 10nm in the short wave infrared band. The data is in ASCII format and can be opened by Notepad, WordPad and other software. The first 5 lines of the file are the file header, which describes the relevant information of the data; The next two columns of data, one for wavelength and one for reflectance (percent reflectance). The file with suffix. TXT in the original folder is not reflectivity, but an intermediate file for calculating reflectivity. The file in the original data is in ASD's own format and opened with ASD viewspec software. This data set includes 9 files: TM data, solar spectrophotometer measurement data, Biandu port B1 sample measurement data, Biandu port B2 sample measurement data, Biandu port C1 sample measurement data, Biandu port G1 sample measurement data, Biandu port W1 sample measurement data, Biandu port W2 sample measurement data and ground object spectrum data.