A Polarimetric Approach for Multipath Suppression/ Mitigation in Ground-Based Interferometric Radar Imaging

When a ground-based interferometric radar is monitoring a slope on the other side of a lake (or a see loch), water level changes can give apparent displacements on the slope because of possible multipath effects. It this paper a polarimetric method is proposed for suppressing (or at least mitigating) these apparent displacements. The method has been developed on the basis of a suitable theoretical model that takes into account the particular measurement geometry in this kind of application. Finally, the method has been tested in an experimental facility built just with this purpose.