Radar return from a continuous vegetation canopy |
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| Authors: | Bush T Ulaby F |
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| Affiliation: | University of Kansas Center for Research, Inc., Lawrence, KS, USA; |
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| Abstract: | The radar backscatter coefficientsigmadegof alfalfa was investigated as a function of both radar parameters and the physical characteristics of the alfalfa canopy. Measurements were acquired with an 8-18 GHz FM-CW mobile radar over an angular range of0deg-70degas measured from nadir. The experimental data indicate that the excursions ofsigmadegat nadir cover a range of nearly 18 dB during one complete growing cycle. An empirical model forsigmadegwas developed, which accounts for its variability in terms of soil moisture, plant moisture, and plant height. |
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