Indoor experiment on vegetation permittivity measurement using Brewster's angle

Vegetation monitoring is one of the major applications of polarimetric synthetic aperture radar (PolSAR). In this paper, permittivity estimation method for vegetation by using multi-angle polarimetric radar is proposed. The method utilizes Brewster's angle of double-bounce scattering component. We demonstrate validity of the proposed method by indoor model experiments. We use a dihedral reflector and dipole cloud to obtain double-bounce scattering and volume scattering, respectively. The experimental results show that the proposed method works properly when volume scatterer exists.