%0 Dataset
%T Heihe River Integrated Remote Sensing joint test: ENVISAT ASAR ground synchronous observation data set in ARW encrypted observation area (July 14, 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/0d93c8d4-c477-4092-9e0c-137ee3444ff2
%W NCDC
%R 10.12072/ncdc.NIEER.db1713.2022
%A Ran youhua
%A Ren Huazhong
%K Conductivity;aerospace remote sensing;soil;microwave remote sensing;soil temperature;soil moisture;water content
%X On July 14, 2008, ENVISAT ASAR data ground synchronous observation test was carried out in ajoufang 1, ajoufang 2 and ajoufang 3. The observation items mainly include soil moisture and soil temperature. ENVISAT ASAR data is AP mode, VV / VH polarization combination mode, and the transit time is about 11:31bjt. This data can provide a basic ground data set for the development and verification of ENVISAT ASAR remote sensing inversion of soil moisture. A rou sample 1, a rou sample 2 and sample 3 are 4grid × 4grid, 30m per grid × 30m。 Soil moisture measurement method: a rou sample 1, pogo portable soil moisture sensor; A rou quadrat 2, pogo portable soil moisture sensor; A soft sample 3, pogo portable soil moisture sensor;. Number of measuring points: 25 measuring positions: at 30m × Measured on the corner of 30m grid. The measured variables include soil temperature, soil volume water content, loss tangent, soil conductivity, real and imaginary parts of soil complex dielectric constant2. Soil temperature measurement method: a rou quadrat 1, hand-held infrared thermometer (Beijing Normal University 3# and Beijing Normal University 5#); A rou quadrat 2, hand-held infrared thermometer (Beijing Normal University 1# and Beijing Normal University 4#); A rou quadrat 3, hand-held infrared thermometer (Beijing Normal University 2# and Beijing Normal University 6#). Number of measuring points: 25. Two groups are measured at the same time, one from 1 to 25 and the other from 25 to 1. Measuring position: 30 m × Measured on the corner of 30m grid. Record information: sampling time, maximum, minimum and average infrared temperature of two repetitions, and description of surface coverage type. The infrared spectrum of grassland, bare soil and Stellera chamaejasme was measured by infrared spectrometer 102f. This dataset includes:（ 1) ASAR image data folder（ 2) Preprocessing data of infrared spectrometer 102f（ 3) Surface temperature record of synchronous test（ 4) Synchronous soil moistu