Paulo De Tarso Setti Sajad Tabibi Incidence Angle Normalization of Spaceborne GNSS-R Surface Reflectivity for Soil Moisture Retrieval. 510-513 2023 IGARSS https://doi.org/10.1109/IGARSS52108.2023.10282074 conf/igarss/2023 db/conf/igarss/igarss2023.html#SettiT23