Backscatter Reference Areas For an Ellipsoidal Earth Relationships between cross sections for ellipsoidal surfaces
Terrain-flattening We need to move beyond the ellipsoidal Earth to the hills and valleys of the Fairbanks region:
Address the layover and foreshortening of geometric distortions
Correct the radiometric variations associated with topography.
To improve our radiometry:
use local area contributing to backscatter at each location in the SAR scene
Terrain-flattening Solution: Use simulated image to Normalize β0 X Ref.: Small, D., Flattening Gamma: Radiometric Terrain Correction for SAR Imagery, IEEE Transactions on Geoscience and Remote Sensing, 13p (in press).
Terrain Correction in Coastal BC Vancouver GTC (Sept 2008) Integrated contributing area ENVISAT ASAR WSM data courtesy ESA(based on SRTM3)
Terrain Correction in Coastal BC GTC (Sept 2008) Integrated contributing area ENVISAT ASAR WSM data courtesy ESA(based on SRTM3)
But Wait….. For a given class, the ratio of Surface, Double Bounce, and Volume scattering components depend on incidence angle POLARIMETRIC IMPLICATIONS OF INCIDENCE ANGLE VARIABILITY FOR UAVSAR Guritz, Atwood, Chapman, and Hensley
Integration of PolSARpro and MapReady Ingest PALSAR data Terrain-correct Perform WishartExport to GIS Generate T3 with MapReadydecomposition Cluster-busting Radiometric correction using area Lee Sigma Speckle Filter POA compensation