%0 Dataset
%T Heihe integrated remote sensing joint test: Airborne widas ground synchronous observation data set in the encrypted observation area of Linze station (May 30, 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/afa3787a-c200-429d-b6a1-14a43b38e91c
%W NCDC
%R 10.12072/ncdc.NIEER.db1834.2022
%A Sun Qingsong
%A Qu Yonghua
%K Multi angle observation frame;surface radiation temperature;ASD spectrometer;multi angle thermal infrared and CCD camera;fisheye camera;handheld infrared thermometer;soil moisture;BRDF;ground object spectrum;infrared wide-angle dual-mode imager;widas;ring knife;ground synchronous observation;Lai;soil;leaf area index;vegetation;surface radiation characteristics;airborne;ground remote sensing;spectrum
%X On May 30, 2008, the ground synchronous observation of airborne infrared wide-angle dual-mode line / area array scanner (widas) was carried out in the encrypted observation area of Linze station. Widas is composed of 4 CCD cameras, 1 mid infrared thermal imager (AGEMA 550) and 1 thermal infrared thermal imager (S60). It can simultaneously obtain data of 5 angles of visible / near infrared (CCD) band, 7 angles of mid infrared band (MIR) and 7 angles of thermal infrared band (TIR). The observation contents include surface radiation temperature, soil moisture, surface feature spectrum, BRDF, fish eye camera measurement Lai and manual measurement Lai. 1. Soil moisture observation; Observation target: 0-5cm topsoil. Observation instrument: ring knife (volume 50cm ^ 3), ml2x soil moisture rapid tester. Observation quadrat and observation times: ly07 quadrat under the seventh route and ly08 quadrat under the Eighth Route in the desert transition zone from east to West (9 observations each). The pretreatment data is soil volume water content. Data storage: Excel. 2. Surface radiation temperature observation; Observation instrument: hand held infrared thermometer (cold and drought Institute 5#, cold and drought Institute 6#); All instruments have been calibrated (please refer to the calibration data of handheld infrared thermometer. XLS). Observation quadrat and observation times: ly07 and ly08 (49 observation points per quadrat, 3 repetitions per observation point). Preprocessing data according to the thermal infrared calibration data (the standard source is blackbody), the measured temperature of each instrument is linearly fitted with the corresponding blackbody temperature to obtain the fitting equation, and then the above fitted equation is used to calibrate the observed original observation data. Data storage: Excel. 3．BRDF； Observation instrument: ASD spectrometer of Beijing Normal University, 350-2500 nm; 40% reference plate; The multi angle observation frame include