Nestor Yague-Martinez, C. Rossi, M. Lachaise, Fernando Rodríguez González, T. Fritz, H. Breit
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Interferometric processing algorithms of TanDEM-X data
The purpose of this paper is to provide an algorithmic overview of the interferometric processing embedded in the Integrated TanDEM-X Processor (ITP), settled to the generation of the raw digital elevation model (DEM). The main processing blocks are described, with a focus on the spectral matching of the azimuth spectra, the high-precision coregistration, the dual-baseline phase unwrapping and the geocoding of the products. The robustness of the algorithms is demonstrated through a dual-pass TerraSAR-X scenario.
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