[en] Most recent SAR sensors use wide band signals to achieve metric range resolution. One can also take advantage of wide band to split it into sub-bands and generate several lower-resolution images, centered on slightly different frequencies, from a single acquisition. This process, named Multi Chromatic Analysis (MCA) corresponds to performing a spectral analysis of SAR images.
Split-Band SAR interferometry (SBInSAR) is based on spectral analysis performed on each image of an InSAR pair, yielding a stack of sub-band interferograms. Scatterers keeping a coherent behaviour in each sub-band interferogram show a phase that varies linearly with the carrier frequency, the slope being proportional to the absolute optical path difference. This potentially solves the problems of phase unwrapping on a pixel-per-pixel basis.
In this paper, we present an SBInSAR processor and its application using TanDEM-X data over the Nyiragongo volcano.
Centre de recherche :
CSL - Centre Spatial de Liège - ULiège Musée Royal de l'Afrique Centrale - MRAC Musée National d'Histoire Naturelle - MNHN (Luxembourg)
Disciplines :
Physique, chimie, mathématiques & sciences de la terre: Multidisciplinaire, généralités & autres
Auteur, co-auteur :
De Rauw, Dominique ; Université de Liège - ULiège > CSL (Centre Spatial de Liège)
Kervyn, François; Musée royal de l'Afrique centrale
d'Oreye, Nicolas; National Museum of Natural History
Smets, Benoit; Musée royal de l'Afrique centrale
Albino, Fabien; Musée royal de l'Afrique centrale
Barbier, Christian ; Université de Liège - ULiège > CSL (Centre Spatial de Liège)
Langue du document :
Anglais
Titre :
Split-Band Interferometric SAR Processing Using TanDEM-X Data
Date de publication/diffusion :
mars 2015
Nom de la manifestation :
FRINGE 2015
Organisateur de la manifestation :
ESA
Lieu de la manifestation :
Frascati, Italie
Date de la manifestation :
23 - 27 mars 2015
Manifestation à portée :
International
Titre de l'ouvrage principal :
ESA SP-731
Intitulé du projet de recherche :
Study and Monitoring of Virunga volcanoes using TanDEM-X (Vi-X)
Organisme subsidiant :
BELSPO - SPP Politique scientifique - Service Public Fédéral de Programmation Politique scientifique
Veneziani, N., Bovenga, F., Refice, A., A wide-band approach to absolute phase retrieval in SAR interferometry (2003) Multidimensional Systems and Signal Processing, 14, pp. 183-205
Brcic, R., Eineder, M., Bamler, R., Steinbrecher, U., Schulze, D., Metzig, R., Papathanassiou, K., Suess, M., Delta-k wideband SAR interferometry for DEM generation and persistent scatterers using terrasar-x (2009) ESA Proc. FRINGE 2009, p. SP677
Bovenga, F., Giacovazzo, V.M., Refice, A., Veneziani, N., Multi-chromatic analysis of InSAR data (2013) IEEE Transaction on Geoscience and Remote Sensing, 51 (9), pp. 4790-4799
Wauthier, C., Cayol, V., Kervyn, F., D'Oreye, N., Magma sources involved in the 2002 Nyiragongo eruption, as inferred from an InSAR analysis (2012) J. Geophys. Res., 117, p. B05411
Bovenga, F., Giacovazzo, V.M., Refice, A., Veneziani, N., Derauw, D., Vitulli, R., Interferometric multi-chromatic analysis of TerraSAR-X data (2011) Proc. 4th TerraSAR-X Science Team Meeting, DLR - Oberpfaffenhofen, , Germany, 14-16 February 2011
Duque, S., Balss, U., Rossi, C., (2012) CoSSC Generation and Interferometric Considerations, (10). , DLR Remote Sensing Technology Institute, TDPGS-TN-3129
