Tandem-L is a German mission proposal for an innovative interferometric L-band radar mission that enables the systematic monitoring of dynamic Earth processes using advanced techniques and technologies. The Tandem-L mission concept consists of two cooperating satellites flying in close formation. The single-pass imaging mode for polarimetric SAR interferometry and the repeat-pass acquisition mode for differential interferometry provide a unique data source to observe, analyse and quantify a wide range of mutually interacting processes in the bio-, geo-, hydro- and cryosphere. The systematic observation of these processes benefits from the high data acquisition capacity and the novel high-resolution wide-swath SAR imaging modes that combine digital beamforming with a large reflector antenna. This paper provides an overview of the Tandem-L mission concept and its main application areas. In section 2 the measurement and mission concept will be presented based on these requirements. Due to the need of having Pol-InSAR and D-InSAR modes in the mission concept, one satellite should have a nearly circular and polar orbit within a narrow tube of a few hundred meters for D-InSAR operation, while the second satellite should have an orbit which provides the required baselines for Pol- InSAR. The same helix orbit concept as in the TanDEM-X mission is adopted for the second satellite where a small eccentricity offset and a shift of the ascending node allows for a flexible adjustment of the desired baselines.
Tandem-L: Global monitoring the earth's dynamics with differential and polarimetric SAR interferometry
Tandem-L: Globales Monitoring der Erddynamik mittels differentieller und polarimetrischer SAR-Interferometrie
2009
4 Seiten, 7 Bilder, 1 Tabelle, 5 Quellen
(nicht paginiert)
Conference paper
Storage medium
English
German Aerospace Center (DLR) | 2009
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