3 Years Gap Temporal Interferometric Coherence at P Band

Conference: EUSAR 2012 - 9th European Conference on Synthetic Aperture Radar
04/23/2012 - 04/26/2012 at Nuremberg, Germany

Proceedings: EUSAR 2012

Pages: 4Language: englishTyp: PDF

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Dupuis, Xavier; Dubois-Fernandez, Pascale (ONERA, France)
Ulander, Lars; Gustavsson, Anders (FOI, Sweden)

During BIOSAR-3 campaign, funded by ESA in support of BIOMASS, in September 2010, the ONERA Airborne SAR SETHI acquired data over the Remningstorp area flown by E-SAR from DLR in March- April 2007 with the exact same tracks in order to evaluate the behavior of the temporal interferometric coherence over forest with a 3-years gap. SETHI and E-SAR systems do not have the same center frequencies (355 MHz for SETHI, 340 MHz for E-SAR) and bandwidth (150 MHz for SETHI, 70 MHz for E-SAR). Special post-processing was conducted on the SETHI data and German data in order to obtain a dataset with equivalent frequency bands and geometry. The results show a surprisingly good coherence level, potentially opening the way for applications such as tomography, multi- baseline PolInSAR, coherent change detection …