Statistics – Applications
Scientific paper
Jan 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002esasp.475..403u&link_type=abstract
In: Proceedings of the Third International Symposium on Retrieval of Bio- and Geophysical Parameters from SAR Data for Land Appl
Statistics
Applications
Ers-2, Sar, Backscattering Coefficient, Soil Moisture, Surface Roughness, Vegetation Height And Biomass
Scientific paper
This study evaluates the potential and limitations of using ERS-2 C-band SAR data for estimating soil moisture in rainfeld paddy fields. Results of the study show that ERS-2 band SAR data can be used to measure soil moisture at the top 5-cm layer of the soil profile in rainfed paddy fields. An empirical function was established to estimate the soil moisture content from the backscattering coefficient of the ERS-2 C-band SAR data, with an accuracy of R2 ~ 0,91. The function was established under two conditions. First, when the rainfed paddy fields were bare until they are covered with rice crop at the early vegetative growth stage - 38 cm in height or 425 and 102 g/sq.m. in wet and dry biomass, rspectively. Second, when the change in surface roughness throughout the growing period is small.
Eiumnoh Apisit
Honda Kiyoshi
Tokunaga Mitsuharu
Ugsang Donald M.
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