Normalization of multidirectional red and NIR reflectances with the SAVI

Huete, AR; Hua, G; Qi, J; Chehbouni, A; van Leeuwen, WJD

Normalization of multidirectional red and NIR reflectances with the SAVI

Huete, AR

Hua, G Qi, J Chehbouni, A van Leeuwen, WJD

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Publication Type:: Journal Article
Citation:: Remote Sensing of Environment, 1992, 41 (2-3), pp. 143 - 154
Issue Date:: 1992-01-01

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Field	Value	Language
dc.contributor.author	Huete, AR https://orcid.org/0000-0003-2809-2376	en_US
dc.contributor.author	Hua, G	en_US
dc.contributor.author	Qi, J	en_US
dc.contributor.author	Chehbouni, A	en_US
dc.contributor.author	van Leeuwen, WJD	en_US
dc.date.issued	1992-01-01	en_US
dc.identifier.citation	Remote Sensing of Environment, 1992, 41 (2-3), pp. 143 - 154	en_US
dc.identifier.issn	0034-4257	en_US
dc.identifier.uri	http://hdl.handle.net/10453/13603
dc.description.abstract	Directional reflectance measurements were made over a semidesert gramma (Bouteloua spp.) grassland at various times of the growing season. Azimuthal strings of view angle measurements from + 40° to - 40° were made for various solar zenith angles and soil moisture conditions. The sensitivity of the normalized difference vegetation index (NDVI) and the soil-adjusted vegetation index (SAVI) to these bidirectional measurements was assessed for purposes of improving remote temporal monitoring of vegetation activity. The NDVI response from the grassland canopy was strongly anisotropic about nadir view angles while the SAVI response was symmetric about nadir. This occurred for all sun angles, soil moisture condition, and grass densities. This enabled variations in SAVI-view angle response to be minimized with a cosine function. It is expected that this study will aid in improving the characterization of vegetation temporal activity from Landsat TM, SPOT, AVHRR, and the Earth Observing System MODIS sensor. © 1992.	en_US
dc.relation.ispartof	Remote Sensing of Environment	en_US
dc.relation.isbasedon	10.1016/0034-4257(92)90074-T	en_US
dc.subject.classification	Geological & Geomatics Engineering	en_US
dc.title	Normalization of multidirectional red and NIR reflectances with the SAVI	en_US
dc.type	Journal Article
utslib.citation.volume	2-3	en_US
utslib.citation.volume	41	en_US
utslib.for	0909 Geomatic Engineering	en_US
utslib.for	0406 Physical Geography and Environmental Geoscience	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Life Sciences
pubs.organisational-group	/University of Technology Sydney/Strength - CAMGIS - Centre for Advanced Modelling and Geospatial lnformation Systems
utslib.copyright.status	closed_access
pubs.issue	2-3	en_US
pubs.publication-status	Published	en_US
pubs.volume	41	en_US

Abstract:

Directional reflectance measurements were made over a semidesert gramma (Bouteloua spp.) grassland at various times of the growing season. Azimuthal strings of view angle measurements from + 40° to - 40° were made for various solar zenith angles and soil moisture conditions. The sensitivity of the normalized difference vegetation index (NDVI) and the soil-adjusted vegetation index (SAVI) to these bidirectional measurements was assessed for purposes of improving remote temporal monitoring of vegetation activity. The NDVI response from the grassland canopy was strongly anisotropic about nadir view angles while the SAVI response was symmetric about nadir. This occurred for all sun angles, soil moisture condition, and grass densities. This enabled variations in SAVI-view angle response to be minimized with a cosine function. It is expected that this study will aid in improving the characterization of vegetation temporal activity from Landsat TM, SPOT, AVHRR, and the Earth Observing System MODIS sensor. © 1992.

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http://hdl.handle.net/10453/13603