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A radiative transfer model to simulate light scattering in a compact granular medium using a Monte-Carlo approach: Validation and first applications

Pilorget, C. and Vincendon, M. and Poulet, F. (2013) A radiative transfer model to simulate light scattering in a compact granular medium using a Monte-Carlo approach: Validation and first applications. Journal of Geophysical Research. Planets, 118 (12). pp. 2488-2501. ISSN 2169-9097. https://resolver.caltech.edu/CaltechAUTHORS:20140206-114110391

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Abstract

A new radiative transfer model to simulate light scattering in a compact granular medium using a Monte‒Carlo approach is presented. The physical and compositional properties of the sample can be specified at the grain scale, thus allowing to simulate different kinds of heterogeneties/mixtures within the sample. The radiative transfer is then calculated using a ray tracing approach between the grains, and probabilistic physical parameters such as a single scattering albedo and a phase function at the grain level. The reflectance and the albedo can be computed at different scales and for different geometries: from the grain scale to the sample one. The photometric behavior of the model is validated by comparing the bidirectional reflectance obtained for various media and geometries with the one of semi‒infinite multilayer models, and a few first applications are presented. This model will be used to refine our understanding of visible/NIR remote sensing data of planetary surfaces, as well as future measurements of hyperspectral microscopes which may be able to resolve spatial compositional heterogeneities within a given sample.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1002/2013JE004465DOIArticle
http://onlinelibrary.wiley.com/doi/10.1002/2013JE004465/abstractPublisherArticle
Additional Information:© 2013 American Geophysical Union. Received 18 June 2013; revised 21 September 2013; accepted 8 November 2013; published 12 December 2013. The authors would like to thank S. Douté for useful discussions about this work. We are also grateful to C.S Edwards for helping with the manuscript, as well as our colleagues at IAS and Caltech for inspiration and advice. Finally, we thank Y. Shkuratov and an anonymous reviewer for their reviews that helped improving the manuscript.
Subject Keywords:radiative transfer; planetary surface; Monte‒Carlo; VIS/NIR spectroscopy; photometry
Issue or Number:12
Record Number:CaltechAUTHORS:20140206-114110391
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20140206-114110391
Official Citation:Pilorget, C., M. Vincendon, and F. Poulet (2013), A radiative transfer model to simulate light scattering in a compact granular medium using a Monte‒Carlo approach: Validation and first applications, J. Geophys. Res. Planets, 118, 2488-2501, doi:10.1002/2013JE004465.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:43702
Collection:CaltechAUTHORS
Deposited By: Jason Perez
Deposited On:06 Feb 2014 23:26
Last Modified:03 Oct 2019 06:10

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