Monitoring Bare Agricultural Soil: Comparison between Ground Based SAR PoSAR System Measurements and Multi-angular RADARSAT-2 Datasets

International audienceThe objective of this study is to evaluate the surface roughness and soil moisture effects on polarimetric parameters under multi-incidence angle condition. In order to achieve this objective, we propose to use Ground Based (GB) SAR experiments, in which the specific levels of surface roughness and soil moisture are set deliberately. The results show that image acquired with high incidence angle is more sensitive to surface roughness than that with low incidence angle. Moreover, the results we obtained with our GB-SAR system (called PoSAR for Pocket SAR) are in agreement with the behavior of multi-angular RADARSAT-2 data that we have previously obtained. This indicates that the combination of various incidence angles may help us to improve surface roughness monitoring accuracy and also to get a better estimation of soil parameters