Abstract
This paper considers two aspects of the microwave interaction with vegetation media. The first aspect focuses on the radar backscatter behavior as a function of the vegetation geometrical and electrical properties. Experimental data covering the 1–18 GHz region are used to (a) model the vegetation canopy as a water cloud, (b) evaluate the attenuation by the canopy, and (c) generate a vegetation clutter model describing the statistical distribution of vegetation backscatter under a wide range of environmental conditions. The second aspect of this paper focuses on the use of radar for crop identification. Multitemporal data are used to evaluate crop classification accuracy of radar alone and in conjunction with Landsat data. In addition, the role of radar as a substitute for optical sensors during cloud-covered passes is evaluated.
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