Experimental relationships between microwave emission and vegetation features†

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Abstract
Radiometric features of vegetation from the X and Ka bands were investigated with ground-based radiometers in 1981–1983. Crops investigated were alfa-alfa, corn and wheat. Microwave data have been compared with physical conditions of the soil-plant-atmosphere continuum and with some biological parameters of plants. Results of these observations have shown that the difference between normalized temperatures from the Ka and X bands is sensitive to vegetation type, while the polarization index from the Ka band seems to be dependent on plant water conditions.
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