Polarimetric Applications of A Broadband Ground-based SAR System to Tree Monitoring

Abstract

SAR is a well-known technique for airborne or space-borne remote sensing. It can usefully be exploited in a ground-based radar imaging system. We developed a broadband ground-based polarimetric SAR system for environmental studies. Using the ground-based polarimetric SAR system, we carried out measurements for three different trees in spring, summer and autumn, and for a cherry tree during buds, blooming flowers and flourishing leaves periods, respectively. This system provides valuable information about the scatterers, and the different scattering features of the trees during the different conditions can be detected by the polarimetric measurement. Different scatterers have different frequency dependence. The results of polarimetric analysis are presented in this report, which are consistent with the ground truth.