Sébastien Angélliaume

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RESUME A polarimetric and PolInSAR analysis has been conducted on the Nezer forest (Southern France) at L and P band on high resolution SAR data acquired with the ONERA RAMSES system in January 2004. The dataset was investigated for its potential for retrieval of forest parameters from SAR data using three different techniques: • Radiometric inversion from(More)
Global warning is now known to be the major environmental issue mankind will have to face in the next decade. Monitoring of vegetation and biomass is clearly an essential piece of information required at all levels ranging from the scientific studies to understand and forecast, to the political actors and government leaders responsible for drafting(More)
The GO-SSA-Extended model is an extension of the physical GO-SSA model with augmented range of validity. It is obtained through the addition of extra empirical terms. This improved model can predict the backscatter reflectivity from the sea surface for the full range of grazing and azimuthal angles. This model compares favorably with Xband experimental(More)
Ship detection with satellite based SAR was first demonstrated by the experimental Seasat in 1978. With later first-generation satellites such as ERS-1, JERS-1, ERS-2 and Radarsat-1, the field has reached some maturity. The second generation of radar satellites, ENVISAT (2002), Radarsat-2 (2005), ALOS (2004), have steerable beams, some polarization(More)
SETHI is the new airborne SAR system developed by the ONERA, the French Aerospace Lab. This system was developed according to the standard FAR25 applied to civil application. The main improvement compared to the previous ONERA airborne radar system RAMSES is that the antennas are located in two pods compatible with small aircrafts like the Falcon 20. This(More)