Accurate Geometric Calibration of Sentinel-1 Data

Conference: EUSAR 2018 - 12th European Conference on Synthetic Aperture Radar
06/04/2018 - 06/07/2018 at Aachen, Germany

Proceedings: EUSAR 2018

Pages: 6Language: englishTyp: PDF

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Piantanida, Riccardo; Recchia, Andrea; Franceschi, Niccolo; Valentino, Antonio (ARESYS S.r.l., Italy)
Miranda, Nuno (European Space Agency & ESRIN, Italy)
Schubert, Adrian; Small, David (University of Zurich, Switzerland)

Sentinel-1 A and B are twin spaceborne C-band synthetic aperture radar (SAR) sensors developed and operated by the European Space Agency under the Copernicus Earth Observation programme. An accurate geometric cal-ibration has been performed since the Commissioning Phases on operationally generated Level-1 SAR products. In this paper we address the new improvements to the geometric calibration of Sentinel-1A and -1B products, describing corrections applied to the data to remove artefacts such as swath-dependent biases that had previously been observed in corner reflector measurements.