On the night of October 17, 2007, the ground synchronous observation test of ENVISAT ASAR data was carried out in biandukou sample 1 and biandukou sample 2.
ENVISAT ASAR data is AP mode, VV / VH polarization combination mode, and the transit time is about 23:04bjt. Both flat mouth quadrat 1 and flat mouth quadrat 2 are 3grid × 3grid, 30m for each grid × 30m square, a total of 25 sampling points (including center point and corner point).
In synchronization with the satellite transit, the soil temperature, soil volume water content (cm ^ 3 / cm ^ 3), soil salinity (s / M) and soil conductivity (s / M) were measured by Hydra probe moisture meter in biandukou sample 1 and biandukou sample 2; Hand held infrared thermometer to obtain surface radiation temperature; 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. At the same time, some parameters of vegetation were investigated, mainly including vegetation height, coverage and vegetation water content.
This data can provide a basic ground data set for the development and verification of active microwave remote sensing inversion algorithm and forward model of soil moisture and freeze-thaw state.
On the night of October 17, 2007, the ground synchronous observation test of ENVISAT ASAR data was carried out in biandukou sample 1 and biandukou sample 2.
ENVISAT ASAR data is AP mode, VV / VH polarization combination mode, and the transit time is about 23:04bjt. Both flat mouth quadrat 1 and flat mouth quadrat 2 are 3grid × 3grid, 30m for each grid × 30m square, a total of 25 sampling points (including center point and corner point)
In synchronization with the satellite transit, the soil temperature, soil volume water content (cm ^ 3 / cm ^ 3), soil salinity (s / M) and soil conductivity (s / M) were measured by Hydra probe moisture meter in biandukou sample 1 and biandukou sample 2; Hand held infrared thermometer to obtain surface radiation temperature; 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. At the same time, some parameters of vegetation were investigated, mainly including vegetation height, coverage and vegetation water content.
Good data quality
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CC BY 4.0 (Creative Commons Attribution 4.0 International License).
CSTR:11738.11.ncdc.NIEER.2021.1734
10.12072/ncdc.NIEER.db1785.2022
