Reference : Split-Band Interferometric SAR Processing Using TanDEM-X Data
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Split-Band Interferometric SAR Processing Using TanDEM-X Data
De Rauw, Dominique mailto [Université de Liège - ULiège > > CSL (Centre Spatial de Liège) >]
Kervyn, François mailto [Musée royal de l'Afrique centrale > > > >]
d'Oreye, Nicolas mailto [National Museum of Natural History > > > >]
Smets, Benoit mailto [Musée royal de l'Afrique centrale > > > >]
Albino, Fabien mailto [Musée royal de l'Afrique centrale > > > >]
Barbier, Christian mailto [Université de Liège - ULiège > > CSL (Centre Spatial de Liège) >]
ESA SP-731
23 - 27 mars 2015
[en] Split Band ; InSAR ; Absolute phase unwrapping ; TanDEM-X ; Volcanology ; Nyiragongo
[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 Spatial de Liège - CSL ; Musée Royal de l'Afrique Centrale - MRAC ; Musée National d'Histoire Naturelle - MNHN (Luxembourg)
BELSPO - SPP Politique scientifique - Service Public Fédéral de Programmation Politique scientifique
Study and Monitoring of Virunga volcanoes using TanDEM-X (Vi-X)
Researchers ; Professionals ; Students

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