Radiative transfer model for contaminated slabs

Publication

Reference: Andrieu François, Douté Sylvain, Schmidt Frédéric, Schmitt Bernard (2015). Radiative transfer model for contaminated slabs. Appl. Opt., 54, 9228 - 9241.

Names

Title: Radiative transfer model for contaminated slabs
Abstract: We present a semi-analytical model to simulate the bidirectional reflectance distribution function (BRDF) of a rough slab layer containing impurities. This model has been optimized for fast computation in order to analyze massive hyperspectral data by a Bayesian approach. We designed it for planetary surface ice studies but it could be used for other purposes. It estimates the bidirectional reflectance of a rough slab of material containing inclusions, overlaying an optically thick media (semi-infinite media or stratified media, for instance granular material). The inclusions are assumed to be close to spherical and constituted of any type of material other than the ice matrix. It can be any other type of ice, mineral, or even bubbles defined by their optical constants. We assume a low roughness and we consider the geometrical optics conditions. This model is thus applicable for inclusions larger than the considered wavelength. The scattering on the inclusions is assumed to be isotropic. This model has a fast computation implementation and thus is suitable for high-resolution hyperspectral data analysis.
Keywords: spectroscopy, optics, numerical model, radiative transfer simulation, bidirectional reflection, specular reflectance, BRDF, visible, near-IR, grain size, surface roughness, layer thickness, surface, Earth, planets
Content: sample, optics, applied physics, spectral data, BRDF data

Doi

10.1364/AO.54.009228

Identifiers

Publications