The CORSAR project: Can Polarimetric SAR Interferometry improve Forest Biomass Estimation?

作者: O. Stebler , P. Saich , R. Cox , H. Balzter , C. Rowland

DOI:

关键词: ResidualCanopyVegetationInterferometryCoherence (signal processing)BiomassHyperspectral imagingGeographyRemote sensingPolarimetry

摘要: RESUME The main limitation in the application of spaceborne SAR to large-scale forest biomass mapping is variability canopy structure and vegetation density. It causes signal saturation a large residual error parameter estimates. A problem defining retrieval algorithms for that microwaves respond shapes, sizes, orientations dielectric properties all illuminated scatterers including ground. Microwave backscatter models have revealed effect variation on can be higher than biomass. Polarimetric interferometry potentially offers means improving SAR-based estimates by quantifying structural variability. polarisation information dependent scattering mechanisms, interferometric used determine vertical location these events canopy. CORSAR project (Carbon Observation Retrieval from SAR), which supported UK Natural Environment Research Council (NERC), has objective examine polarimetric decomposition methods estimating effects biomass-backscatter relationships. We present results coherence optimisation L-band E-SAR data acquired during Hyperspectral Airborne Campaign (SHAC 2000) analysed relationship expected tree height.

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