Bistatic scattering from forest components. Part II: first validation of a bistatic polarimetric forest model in the VHF-UHF band [225–475 MHz] using indoor measurements

This paper introduces the validation of the extension of a scattering model of forests to the bistatic configuration (COBISMO). The measurement in an anechoic chamber is first described. The various stages of the validation process are presented. One dielectric cylinder on a metallic plate is chosen as the canonical element to be tested. Indoor measurements are confronted with the results predicted by the model, first in the horizontal/azimuthal plane, then in the vertical/elevation plane. Then mutual coupling is also investigated using a group of three cylinders. The agreement between simulation and measurement is surprisingly good in light of the precision of such indoor measurements. Several other aspects are discussed: the influence of the frequency, of the shape of the section of the cylinder, and polarimetric effects.