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Retrievals of underlying surface roughness and moisture from polarimetric pulse echoes in the specular direction through inhomogeneous vegetation canopy

Retrievals of underlying surface roughness and moisture from polarimetric pulse echoes in the specular direction through inhomogeneous vegetation canopy
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摘要 The time-dependent Mueller matrix solution of vector radiative transfer for inhomoge-neous random media of non-spherical scatterers is presented. Co-polarized and cross-polarized bistatic scatterings for a polarized pulse incidence are numerically simulated. Numerical results well demonstrate volumetric and surface scattering mechanism and depict the inhomogeneous fraction profile of random scatterers. The peak tails in polarized echoes due to wave reflections from the underlying surface can be identified. Its co-polarized peaks in the specular direction are applied to simultaneous retrievals of the underlying surface roughness and moisture in the pres-ence of inhomogeneous vegetation canopy. The time-dependent Mueller matrix solution of vector radiative transfer forinhomogeneous random media of non-spherical scatterers is presented. Co-polarized andcross-polarized bistatic scatterings for a polarized pulse incidence are numerically simulated.Numerical results well demonstrate volumetric and surface scattering mechanism and depict theinhomogeneous fraction profile of random scatterers. The peak tails in polarized echoes due to wavereflections from the underlying surface can be identified. Its co-polarized peaks in the speculardirection are applied to simultaneous retrievals of the underlying surface roughness and moisture inthe presence of inhomogeneous vegetation canopy.
出处 《Science China(Technological Sciences)》 SCIE EI CAS 2003年第1期71-81,共11页 中国科学(技术科学英文版)
基金 supported by the China Key Basic Research Project 2001CB309400 and the Na-tional Natural Science Foundation of China (Grant Nos. 49831060 6012009). References
关键词 retrieval of roughness and moisture vegetation canopy polarimetric scattering temporal Mueller matrix pulse incidence. retrieval of roughness and moisture vegetation canopy polarimetricscattering temporal mueller matrix pulse incidence
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