Combined Estimation of Ionospheric Scintillations in SAR images exploiting Faraday Rotation and Autofocus for the Biomass Mission

Konferenz: EUSAR 2021 - 13th European Conference on Synthetic Aperture Radar
29.03.2021 - 01.04.2021 in online

Tagungsband: EUSAR 2021

Seiten: 6Sprache: EnglischTyp: PDF

Gracheva, Valeria; Kim, Jun Su; Rodriguez-Cassola, Marc; Papathanassiou, Kostas (German Aerospace Center (DLR), Microwaves and Radar Institute, Oberpfaffenhofen, Germany)

At lower frequencies, synthetic aperture radar images can be significantly affected by ionospheric scintillations. In this paper an approach that combines the Faraday rotation and the autofocus estimation method is proposed, which achieves a superior performance when compared to using these techniques independently. This improvement is demonstrated with simulated point targets and airborne data adjusted to the parameters of the Biomass system.