Remote Sens. 2009, 1(3), 496-518; doi:10.3390/rs1030496
Article

Evaluation and Normalization of Cloud Obscuration Related BRDF Effects in Field Spectroscopy

1,* email, 1email, 1email, 2email and 1email
Received: 1 July 2009; in revised form: 7 August 2009 / Accepted: 11 August 2009 / Published: 25 August 2009
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: The impact of target bidirectional reflectance in dual field of view spectroscopy was described and quantified using field measurements and ray-tracing simulations. A data-driven normalization method was developed to convert reflectance factors under cloud obscured conditions into clear sky reflectance by decomposing the target bidirectional reflectance into an isotropic target-specific component and a group-specific bidirectional component. An evaluation on tree, grass and gravel targets suggests a reduction in relative reflectance error obtained by normalization from 15% to less than 5% between 400 and 1800 nm. At higher wavelengths a decreased signal-to-noise ratio increases the errors.
Keywords: dual field-of-view; spectroradiometer; hyperspectral; BRDF; clouds; obscuration
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MDPI and ACS Style

Stuckens, J.; Somers, B.; Verstraeten, W.W.; Swennen, R.; Coppin, P. Evaluation and Normalization of Cloud Obscuration Related BRDF Effects in Field Spectroscopy. Remote Sens. 2009, 1, 496-518.

AMA Style

Stuckens J, Somers B, Verstraeten WW, Swennen R, Coppin P. Evaluation and Normalization of Cloud Obscuration Related BRDF Effects in Field Spectroscopy. Remote Sensing. 2009; 1(3):496-518.

Chicago/Turabian Style

Stuckens, Jan; Somers, Ben; Verstraeten, Willem W.; Swennen, Rony; Coppin, Pol. 2009. "Evaluation and Normalization of Cloud Obscuration Related BRDF Effects in Field Spectroscopy." Remote Sens. 1, no. 3: 496-518.

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