http://www.cnr.it/ontology/cnr/individuo/prodotto/ID167552

Joint multi-baseline SAR interferometry (Articolo in rivista)

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Fornaro G, Guarnieri AM, Pauciullo A, Tebaldini S (2005)
Joint multi-baseline SAR interferometry
in EURASIP journal on applied signal processing
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Guarnieri AM : Politecn Milan, Dipartimento Elettron & Informaz, I-20133 Milan, Italy Tebaldini S: Politecn Milan, Dipartimento Elettron & Informaz, I-20133 Milan, Italy (literal)

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We propose a technique to provide interferometry by combining multiple images of the same area. This technique differs from the multi-baseline approach in literature as (a) it exploits all the images simultaneously, (b) it performs a spectral shift preprocessing to remove most of the decorrelation, and (c) it exploits distributed targets. The technique is mainly intended for DEM generation at centimetric accuracy, as well as for differential interferometry. The problem is framed in the contest of single-input multiple-output (SIMO) channel estimation via the cross-relations (CR) technique and the resulting algorithm provides significant improvements with respect to conventional approaches based either on independent analysis of single interferograms or multi-baselines phase analysis of single pixels of current literature, for those targets that are correlated in all the images, like for long-term coherent areas, or for acquisitions taken with a short revisit time (as those gathered with future satellite constellations). (literal)

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