Title :
Relationship Between PALSAR Backscatter and Surface-Roughness Parameters From Iron Laterites in CarajÁs, Amazon Region
Author :
de Queiroz da Silva, A. ; Paradella, Waldir R. ; Freitas, Corina C. ; De Oliveira, Cleber Gonzales
Author_Institution :
Nat. Inst. for Space Res., Sao Jose dos Campos, Brazil
Abstract :
The objective of this investigation was to evaluate the influence of micro- and macrotopography on PALSAR fine-beam dual backscattering in the characterization of iron laterites in Carajas Province, Amazon Region. The moderate linear correlation between sigma0 and surface roughness indicated that, only for L-HH polarization, sigma0 was modulated by the morphology of the geological surfaces.
Keywords :
backscatter; geochemistry; geomorphology; iron; remote sensing by radar; rocks; soil; surface roughness; synthetic aperture radar; topography (Earth); Amazon Region; Carajas; Fe; L-HH polarization; PALSAR backscatter; Phased Array type L-band Synthetic Aperture Radar; South America; geological surface morphology; iron laterites; macrotopography; microtopography; surface-roughness parameter; Amazon Region; CarajÁs; Fe-mineralized laterites; PALSAR; backscattering; geology; surface roughness;
Journal_Title :
Geoscience and Remote Sensing, IEEE Transactions on
DOI :
10.1109/TGRS.2009.2020738
