Statistics – Computation
Scientific paper
Feb 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997jqsrt..57..197m&link_type=abstract
Journal of Quantitative Spectroscopy and Radiative Transfer, vol. 57, issue 2, pp. 197-205
Statistics
Computation
8
Radiative Transfer: Scattering
Scientific paper
The authors examine the validity regime of the ray optics approximation for Gaussian random spheres. The Gaussian sphere is fully characterized by the mean and the covariance function of the radius. The authors calculate the first two moments of the total, Gaussian curvature on such particles, and utilize the second moment in establishing the ray optics regime. As an intermediate result, they obtain the 6×6 covariance matrix for the logarithmic radius and its first and second partial derivatives with respect to the spherical angles. The results are useful when analysing the applicability of the authors' earlier ray optics computations for ensembles of Gaussian spheres.
Fast Petri
Lamberg L.
Lumme Kari
Muinonen Karri
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