EUSAR 2014
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First Results of the Sentinel-1A In-Orbit Antenna Characterization Performed by DLR

Conference: EUSAR 2014 - 10th European Conference on Synthetic Aperture Radar
06/03/2014 - 06/05/2014 at Berlin, Germany

Proceedings: EUSAR 2014

Pages: 4Language: englishTyp: PDF

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Authors:
Castellanos Alfonzo, Gabriel; Schwerdt, Marco; Doering, Bjoern; Tous Ramon, Nuria; Schmidt, Kersten (Microwave and Radar Institute, German Aerospace Center (DLR), Germany)

Abstract:
Sentinel-1A is the first of two new C-band SAR-system satellites commissioned by the ESA. The high demands on radiometric stability and accuracy that are made for Sentinel-1 constitute a challenge for the calibration concept. An integral part of this concept is the antenna model, which was validated on-ground to a remarkable accuracy. To guarantee the image quality, the model needs to be verified in-orbit during the commissioning phase. The methodology of the in-orbit antenna characterization by DLR are presented in this paper. Results could not be described as Sentinel-1A had not been launched at the time of this article’s submission.