Method for inversing soil moisture content from AMSR-E (Advanced Microwave Scanning Radiometer-EOS) data
A technology of AMSR-E and soil moisture, which is applied in the direction of using microwave to test the moisture content, can solve the problem that it is difficult to meet the needs of drought monitoring
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[0044] Here we use the AMSR-E image data of the 5 scenes in mainland China on February 1, 2009 for specific inversion. This method mainly includes two steps, as Figure 6 .
[0045] The first step is to read in the data of each frequency of AMSR-E, obtain the parameters from the header file, and convert the DN value to the brightness temperature;
[0046] The second step is to use formula 5 to calculate the brightness temperature index;
[0047] The third step, on the basis of the second step, use formula 6 to calculate the soil moisture;
[0048] In the fourth step, the soil moisture estimated in the third step is geometrically corrected and combined, and the estimated soil moisture result is Figure 7 shown;
[0049] The fifth step is the verification and analysis of the distribution of the estimation results. According to the national meteorological department and local drought reports in February 2009, the inversion results are basically consistent with the national dro...
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