Bi-directional SAR and Interferometric SAR Short-term Time Series

Conference: EUSAR 2012 - 9th European Conference on Synthetic Aperture Radar
04/23/2012 - 04/26/2012 at Nuremberg, Germany

Proceedings: EUSAR 2012

Pages: 4Language: englishTyp: PDF

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Mittermayer, Josef; Wollstadt, Steffen; Prats, Pau; Lopez-Dekker, Paco; Krieger, Gerhard; Moreira, Alberto (Microwaves and Radar Institute, German Aerospace Center (DLR), Oberpfaffenhofen, Germany)

The paper reports about TerraSAR-X/TanDEM-X Bi-Directional (BiDi) short-term time series experiments. The TerraSAR-X and TanDEM-X satellites flew during the pursuit commissioning phase with an along track separation of 20 km and time series of up to 6 SAR images with repetition intervals of 1 s to 2.5 s were acquired. From the SAR images a sequence of up to 3 interferograms was generated with a repetition interval of 3.6 s. An acquisition constellation with interleaved BiDi and boresight acquisitions is described which allows for 3 repeated acquisitions by one satellite only. The Doppler spectrum is discussed and short-term time series of SAR images and interferograms are presented from acquisitions over Singapore and the Upsala Glacier in Argentina.