Abstract
The multichannel dual-polarized radiation characteristic database of corn vegetation canopy was constructed by using the corn structure parameters field measured data and the Matrix-Doubling model,and the relations between the emissivity and the transmissivity of the corn canopy were obtained using regression analysis based on the database.These relationships were applied to the microwave radiation propagation equation to compute the microwave radiation bright temperature of the surface covered with corn canopy.The results show that the correlation of the measured LAI value and the model inversion LAI is higher than 0.9,which suggests that the multichannel passive microwave data have considerable application potential in the aspect of corn LAI inversion.
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