%0 Dataset
%T Heihe River Integrated Remote Sensing joint test: ENVISAT ASAR ground synchronous observation data set in aryo encrypted observation area (March 15, 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/a6571653-f2da-4da2-a41e-4cbc2fc585b3
%W NCDC
%R 10.12072/ncdc.NIEER.db1742.2022
%A Han Xujun
%K Conductivity;aerospace remote sensing;soil;microwave remote sensing;soil temperature;soil moisture;water content
%X On March 15, 2008, the ground synchronous observation test of ENVISAT ASAR data was carried out in ajoufang 2 and ajoufang 3. ENVISAT ASAR data is AP mode, VV / VH polarization combination mode, and the transit time is about 11:35bjt. Both a rou quadrat 2 and a rou quadrat 3 are 4grid × 4grid, 30m per grid × 30m。 In order to ensure synchronization efficiency, sampling measurement is only carried out at the corner of each grid. Pogo portable soil moisture sensor was used to obtain the real and imaginary parts of soil temperature, soil volume moisture content, loss tangent, soil conductivity and soil complex dielectric constant; Needle thermometer to obtain 0-5cm average soil temperature; The hand-held infrared thermometer obtains the surface radiation temperature for 3 times; The soil is taken with a 100cm ^ 3 ring knife and dried to obtain the weight water content, soil bulk density and volume water content. The real and imaginary parts of soil temperature, soil volume water content, loss tangent, soil conductivity and soil complex dielectric constant were obtained by pogo portable soil moisture sensor in arrou quadrat 3; Ml2x soil moisture quick tester obtains soil volume water content; Needle thermometer to obtain 0-5cm average soil temperature; The hand-held infrared thermometer obtains the surface radiation temperature for 3 times; The soil is taken with a 100cm ^ 3 ring knife and dried to obtain the weight water content, soil bulk density and volume water content. For surface roughness information, please refer to the metadata of "Heihe integrated remote sensing joint test: surface roughness data set of Aru encrypted observation area". In addition, synchronous ground penetrating radar observation was carried out in ajoufang 1. This data can provide a basic ground data set for the development and verification of active microwave remote sensing algorithm for retrieving soil moisture and freeze-thaw state