Development of a Model using Passive Microwave Remote Sensing for Computation of Soil Moisture

C.S. Veena and P. Sinha (India)


Emissivity, Passive remote sensing, NDVI, Dielectricpermittivity, soil moisture.


A successful soil moisture algorithm using radiometer data must identify the accurate soil moisture even in the presence of rough surface and vegetation since both roughness factor and vegetation affects the emissivity from a surface. For bare surfaces, several algorithms have been developed to estimate the soil moisture using radiometer. However, these models show a high error rate for rough surfaces involving vegetation. In this paper, an empirical model has been developed that uses the least square fit of a third order polynomial using real time data. The new model, when compared with the two existing models, was accurate even in the presence of vegetation and rough surface.

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