Sentinel-1A/B SAR and InSAR Performance

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

Proceedings: EUSAR 2018

Pages: 5Language: englishTyp: PDF

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Geudtner, Dirk; Navas-Traver, Ignacio; Vega, Francisco Ceba; Barat, Itziar (European Space Agency, ESTEC, Noordwijk, The Netherlands)
Miranda, Nuno (European Space Agency, ESRIN, Frascati, Italy)
Prats, Pau; Yague-Martinez, Nestor (Microwaves and Radar Institute, German Aerospace Center (DLR), Wessling, Germany)
Breit, Helko; De Zan, Francesco (Institute of Remote Sensing Technology, German Aerospace Center (DLR), Wessling, Germany)
Larsen, Yngvar (Northern Research Laboratory (Norut), Tromsø, Norway)
Recchia, Andrea (Aresys, Milano, Italy)
Small, David; Schubert, Adrian (University of Zurich (UZH), Zurich, Switzerland)

This paper addresses the Copernicus Sentinel-1A/B mission’s SAR and InSAR performance. Sentinel-1 uses preprogrammed SAR mode operations to provide a high revisit frequency and systematic global SAR image coverage. This is mainly based upon the operational use of the novel TOPS (Terrain Observation with Progressive Scans in azimuth) SAR imaging mode. We present results of the SAR system performance analysis focusing on the instrument stability, the radiometric and geolocation accuracy, as well as the Noise Equivalent Σ Zero (NESZ). In addition, we discuss the cross- Sentinel-1A/B SAR Interferometry (InSAR) performance considering the effects of burst synchronization and SAR antenna pointing on the achievable common Doppler bandwidth, as well as the obtained InSAR orbital baseline due to the orbital tube maintenance.