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Polarimetric radar measurements of a forested area near Mt. Shasta

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3 Author(s)
Durden, S.L. ; Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA ; Klein, J.D. ; Zebker, H.A.

The authors present the results of an experiment using the NASA/JPL DC-8 AIRSAR (aircraft synthetic-aperture radar) over a coniferous forest near Mt. Shasta (California) in 1989. Calibration devices were deployed in clearings and under the forest canopy and passes at 20°, 40°, and 55° incidence angles were made with the AIRSAR. A total of eight images at differing incidence angles have been processed and calibrated. The multipolarization multifrequency data were examined, and it was found that the C-band cross section averaged over like and cross polarizations is the best parameter for distinguishing between two stands with differing forest biomass. The average cross section at P- and L-bands is useful only for smaller incidence angles. Parameters describing the polarization behavior of the scattering were primarily useful in identifying the dominant scattering mechanisms for forest backscatter

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Geoscience and Remote Sensing, IEEE Transactions on  (Volume:29 ,  Issue: 3 )