SCATTERING MECHANISM ANALYSIS USING MULTI-ANGULAR POLARIMETRIC RADARSAT-2 DATASETS

Hongquan Wang (1) , Sophie Allain (1) , Stéphane Meric (1) , Eric Pottier (1)

1 IETR - Institut d'Électronique et des Technologies du numéRique

The objective of this study is to analyze scattering mecha- nisms using multi-incidence angle observations over agri- cultural fields. Radarsat-2 datasets acquired in the end of March / beginning of April with four different ranges of incidence angle are explored using polarimetric decom- position methodology. The results show that single scat- tering is always the dominant scattering mechanism over test sites, although single scattering occurs on bare sur- face is significantly stronger than that occurs in vegeta- tion canopy. As incidence angle increases, single scatter- ing decreases, and volumetric scattering increase as ex- pected. Therefore, lower incidence angle acquisition is appropriate to characterize soil moisture over bare sur- face due to the limited effect of roughness, while higher incidence angle is suitable for surface roughness iden- tification over bare surface and plant height description over vegetation canopy. Nevertheless, as the incidence angle increases towards 40

Domaines: Electronique

Hongquan Wang, Sophie Allain, Stéphane Meric, Eric Pottier. SCATTERING MECHANISM ANALYSIS USING MULTI-ANGULAR POLARIMETRIC RADARSAT-2 DATASETS. 6th International Workshop and Science and Applications of SAR Polarimetry and Polarimetric Interferometry, ESA Symposium, Jan 2013, Frascati, Italy. pp.1-6. ⟨hal-00922069⟩