Validation_SWOT_ground_airborne_Fjortoft.ppt

Validation of radiometric models and simulated KaRIn/SWOT data based on ground and airborne acquisitions ,[object Object],[object Object],[object Object],[object Object],IGARSS 2011, Vancouver, Canada, 25-29 July 2011

Outline ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Introduction ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Specificities of KaRIn interferometric SAR w.r.t. existing spaceborne earth observation SAR systems ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Simulation of SLC images (L1) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],SAR images Coherence Interferogram DEM Land cover classes EM models Orbit file Layover/ shadow mask e.g. detection of water surfaces, height estimation, … a r

Δ T = t 0 – t -1 = t +1 – t o = 1 / PRF -> V t -1 t o t +1 RCS t-1 RCS to RCS t+1 Stacking of all raw images indexed by time Focusing Final RAW data level 1 data Simulation of raw images (L0) e.g. study impact of moving water

BUSARD/DRIVE airborne acquisitions (1/2) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

BUSARD/DRIVE airborne acquisitions (2/2) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Espiguette (buoy) Acquisition sites in the Camargue area (2011) Piemanson Vaccarès Rhône

voie a Amplitude ~700 m 0° 13° ~2,6 km ~1° 0° ~4° ~10° Trihedrals Artifacts due to wide antenna lobe (right/ left contamination) DRIVE/BUSARD acquisition 24/02/2011 (Rhône)

DRIVE/BUSARD acquisition 24/02/2011 (Rhône) Phase

DRIVE/BUSARD acquisition 24/02/2011 (Rhône) Coherence >0.9 ~0.7 ~0.3

DRIVE/BUSARD acquisition 14/04/2011 (Vaccarès) Amplitude

DRIVE/BUSARD acquisition 14/04/2011 (Vaccarès) Amplitude 1 Amplitude 2 Coherence Phase

DRIVE/BUSARD acquisition 14/04/2011 (Espiguette) Amplitude

DRIVE/BUSARD acquisition 14/04/2011 (Espiguette) Amplitude 1 Amplitude 2 Coherence Phase

DRIVE/BUSARD acquisition 25/05/2011 (Rhône) Amplitude

Near-field measurements in Ka-band (1/2) ,[object Object],[object Object],[object Object]

Near-field measurements in Ka-band (2/2) ,[object Object],[object Object],[object Object],[object Object]

Water  0 as a function of wind speed Incidence (°/100)  0 (dB) Wind parallel to incidence direction Wind perpendicular to incidence direction  0 (dB) Incidence (°/100)

Conclusion ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

SWOT-related presentations in other sessions ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Validation_SWOT_ground_airborne_Fjortoft.ppt

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Validation_SWOT_ground_airborne_Fjortoft.ppt

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