Radiometric Accuracy and Long-Term Stability of Sentinel-1A and Sentinel-1B

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

Proceedings: EUSAR 2018

Pages: 4Language: englishTyp: PDF

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Schmidt, Kersten; Ramon, Nuria Tous; Schwerdt, Marco (German Aerospace Center, DLR, Germany)

The radiometric accuracy and long-term stability is analyzed for Sentinel-1A and Sentinel-1B. Therefore, a continuous time series with the Interferometric wide-swath mode is acquired for a period of several months. The radiometric performance is derived from point target responses and distributed targets with specific radiometric characteristics. From point target evaluations a high radiometric accuracy is found for both SAR systems. While S-1B shows a very stable behavior, slight performance trends are detected for S-1A. Similar results are observed for the distributed targets, except for very low backscatter. In this case for S-1A a higher radar cross section is derived compared to S-1B.