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

The time-dependent Mueller matrix solution of vector radiative transfer for stratified random media of nonspherical scatterers is presented. Copolarized and cross-polarized bistatic scattering for a polarized pulse incidence are numerically simulated. Numerical results well demonstrate volumetric an...

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Bibliographic Details
Published in:IEEE transactions on geoscience and remote sensing 2004-02, Vol.42 (2), p.426-433
Main Authors: Jin, Y.Q., Chen, F., Chang, M.
Format: Article
Language:English
Subjects:
Applied geophysics
Canopies
Earth sciences
Earth, ocean, space
Exact sciences and technology
Internal geophysics
Mathematical models
Media
Moisture
Numerical simulation
Polarization
Random media
Reflection
Retrieval
Rough surfaces
Scattering
Surface roughness
Tail
Vegetation
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Summary:The time-dependent Mueller matrix solution of vector radiative transfer for stratified random media of nonspherical scatterers is presented. Copolarized and cross-polarized bistatic scattering for a polarized pulse incidence are numerically simulated. Numerical results well demonstrate volumetric and surface scattering mechanism and depict the fraction distribution of random scatterers of stratified random media. The peak tails in polarized echoes due to wave reflections from the underlying surface can be identified. Its copolarized peaks in the specular direction are employed for simultaneous retrievals of the underlying surface roughness and moisture with the presence of stratified vegetation canopy.
ISSN:0196-2892
1558-0644
DOI:10.1109/TGRS.2003.818810