Sentinel-1 Imaging Performance Verification with TerraSAR-X

Conference: EUSAR 2010 - 8th European Conference on Synthetic Aperture Radar
06/07/2010 - 06/10/2010 at Aachen, Germany

Proceedings: EUSAR 2010

Pages: 4Language: englishTyp: PDF

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Scheiber, Rolf; Wollstadt, Steffen; Sauer, Stefan; Malz, Elke; Mittermayer, Josef; Prats, Pau (Microwaves and Radar Institute, German Aerospace Center (DLR), Germany)
Snoeij, Paul; Attema, Evert (ESA-ESTEC, Noordwijk, Netherlands)

This paper presents dedicated analyses of TerraSAR-X data with respect to the Sentinel-1 TOPS imaging mode. First, the analysis of Doppler centroid behaviour for high azimuth steering angles, as occurs in TOPS imaging, is investigated followed by the analysis and compensation of residual scalloping. Finally, the Flexible-Dynamic BAQ (FD-BAQ) raw data compression algorithm is investigated for the first time with real TerraSAR-X data and its performance is compared to state-of-the-art BAQ algorithms. The presented analyses demonstrate the improvements of the new TOPS imaging mode as well as the new FD-BAQ data compression algorithm for SAR image quality in general and in particular for Sentinel-1.