Reference : INTER-BAND COHERENCE OF SPLIT WIDE BAND SAR IMAGES; A POTENTIALLY NEW INFORMATION CHAN...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/2268/29861
INTER-BAND COHERENCE OF SPLIT WIDE BAND SAR IMAGES; A POTENTIALLY NEW INFORMATION CHANNEL
English
De Rauw, Dominique mailto [Université de Liège - ULg > > CSL (Centre Spatial de Liège) >]
Orban, Anne mailto [Université de Liège - ULg > > CSL (Centre Spatial de Liège) >]
Barbier, Christian mailto [Université de Liège - ULg > > CSL (Centre Spatial de Liège) >]
Sep-2009
EARSel Newsletter
79
22-27
Yes
International
0257-0521
[en] wide-band SAR ; coherence ; sub-band splitting ; Chromatic view
[en] Recently-launched SAR sensors like TerraSAR-X or CosmoSkyMed are equipped with wide
bandwidth radar signal emitters. Working at large bandwidth allows reaching metric range
resolution, which combined with spotlight mode, leads to Very High Resolution (VHR) SAR
imagery.
One can also take advantage of this wide band to split it into sub-bands and generate several
lower resolution images from the same master one, each centered on a slightly different cen-
tral frequency.
These sub-images can then be used in a classical interferometric process to estimate inter-
band coherence of a given scene. This inter-band coherence reveals scatterers keeping a
stable phase behaviour along with frequency shift. In this paper, a simple model derived from
Zebker model for randomly distributed surface scatterers is proposed and examples are pre-
sented showing that scatterers can have a behaviour that deviates from the model, leading to
a new information channel.
Centre Spatial de Liège
Agence spatiale européenne - ESA
WiMCA
Researchers
http://hdl.handle.net/2268/29861

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