Mathematics
Scientific paper
Jun 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988em%26p...41..223w&link_type=abstract
Earth, Moon, and Planets (ISSN 0167-9295), vol. 41, June 1988, p. 223-240. NASA-supported research.
Mathematics
1
Digital Radar Systems, Laser Altimeters, Radar Echoes, Radar Imagery, Differential Equations, Hypsometers, Radar Scattering, Signal Measurement, Topography
Scientific paper
A method for determining the dependence of radar backscatter on incidence angle that is applicable to the region corresponding to a particular radar image is derived. The method is based on enforcing mathematical consistency between the frequency distribution of the images' pixel signals and a one-dimensional frequency distribution of slope component, which is obtained from a radar or laser altimetry profile in or near the imaged area. To test the resulting algorithm, an arbitrarily selected reflectance function is used to generate an artificial radar image from a digitized topographic map of the Lake Champlain West quadrangle in the Adirondack Mountains, U.S. It is found that, for 99 percent of the data, the maximum error is 1 degree.
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