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Open AccessArticle

A Method of Retrieving BRDF from Surface-Reflected Radiance Using Decoupling of Atmospheric Radiative Transfer and Surface Reflection

Science Systems and Applications, Inc., Hampton, VA 23666, USA
Remote Sens. 2018, 10(4), 591; https://doi.org/10.3390/rs10040591
Received: 22 February 2018 / Revised: 5 April 2018 / Accepted: 9 April 2018 / Published: 11 April 2018
(This article belongs to the Special Issue Radiative Transfer Modelling and Applications in Remote Sensing)
Bi-directional reflection distribution function (BRDF) defines anisotropy of the surface reflection. It is required to specify the boundary condition for radiative transfer (RT) modeling used in aerosol retrievals, cloud retrievals, atmospheric modeling, and other applications. Ground based measurements of reflected radiance draw increasing attention as a source of information about anisotropy of surface reflection. Derivation of BRDF from surface radiance requires atmospheric correction. This study develops a new method of retrieving BRDF on its whole domain, making it immediately suitable for further atmospheric RT modeling applications. The method is based on the integral equation relating surface-reflected radiance, BRDF, and solutions of two auxiliary atmosphere-only RT problems. The method requires kernel-based BRDF. The weights of the kernels are obtained with a quickly converging iterative procedure. RT modeling has to be done only one time before the start of iterative process. View Full-Text
Keywords: BRDF; surface-reflected radiance; ground measurements; atmosphere-surface decoupling BRDF; surface-reflected radiance; ground measurements; atmosphere-surface decoupling
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MDPI and ACS Style

Radkevich, A. A Method of Retrieving BRDF from Surface-Reflected Radiance Using Decoupling of Atmospheric Radiative Transfer and Surface Reflection. Remote Sens. 2018, 10, 591.

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