Title :
Bistatic synchronization and processing of TanDEM-X data
Author :
Breit, H. ; Younis, M. ; Balss, U. ; Niedermeier, A. ; Grigorov, C. ; Hueso-Gonzalez, J. ; Krieger, G. ; Eineder, M. ; Fritz, T.
Author_Institution :
Remote Sensing Technol. Inst., German Aerosp. Center (DLR), Wessling, Germany
Abstract :
The German TanDEM-X mission flies the two satellites TerraSAR-X (TSX) and TanDEM-X (TDX) in a close orbit formation establishing a bistatic interferometer in space. A major challenge in bistatic SAR data processing is the synchronization of the satellites´ oscillators. The paper at hand summarizes the synchronization concept, provides in-orbit verification and performance figures, describes the compensation approach within the SAR processing workflow and finally quantifies the synchronization performance in terms of achieved DEM accuracy.
Keywords :
artificial satellites; celestial mechanics; digital elevation models; radar interferometry; radar signal processing; synchronisation; synthetic aperture radar; DEM accuracy; German TanDEM-X mission; SAR processing; TDX; TSX; TanDEM-X data; TerraSAR-X; bistatic SAR data processing; bistatic interferometer; bistatic processing; bistatic synchronization; close orbit formation; satellite oscillator synchronization; Oscillators; Phase measurement; Satellites; Signal to noise ratio; Spaceborne radar; Synchronization; TanDEM-X; bistatic radar; interferometry; oscillator synchronization; synthetic aperture radar;
Conference_Titel :
Geoscience and Remote Sensing Symposium (IGARSS), 2011 IEEE International
Conference_Location :
Vancouver, BC
Print_ISBN :
978-1-4577-1003-2
DOI :
10.1109/IGARSS.2011.6049700
