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A fully polarimetric scattering model for a coniferous forestFor an elliptically polarized plane wave exciting a coniferous forested canopy a fully polarimetric scattering model has been developed to account for the size and orientation distributions of each forest constituent. A canopy is divided into three layers over a rough interface. The upper two layers represent the crown with its constituents (leaves, stems, and branches). The lower layer stands for the trunks and the rough interface is the canopy-ground interface. For a plane wave exciting the canopy, the explicit expressions for the bistatic scattering coefficient associated with each scattering mechanism are given. For an elliptically polarized incidence wave, the present model can be recast in a form suitable for polarimetric wave synthesis. The model validation is justified by comparing the measured and the calculated values of the backscattering coefficients for a linearly polarized incident wave. The comparison is made over a wide range of frequencies and incident angles. Numerical simulations are conducted to calculate the radar polarization signature of the canopy for different incident frequencies and angles.
Document ID
19920052231
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Karam, M. A.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Fung, A. K.
(Texas, University Arlington, United States)
Lopes, A.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Mougin, E.
(Centre d'Etude Spatiale des Rayonnements Toulouse, France)
Date Acquired
August 15, 2013
Publication Date
January 1, 1991
Subject Category
Earth Resources And Remote Sensing
Meeting Information
Meeting: IGARSS ''91: Annual International Geoscience and Remote Sensing Symposium
Location: Espoo
Country: Finland
Start Date: June 3, 1991
End Date: June 6, 1991
Accession Number
92A34855
Distribution Limits
Public
Copyright
Other

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