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Browsing by Subject "Normalized difference vegetation index"

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Assessing the effects of human-induced land degradation in the former homelands of northern South Africa with a 1 km AVHRR NDVI time-series

Author: Wessels, Konrad J ; Prince, SD ; Frost, PE ; Van Zyl, D Date: 15 May 2004 There is a pressing need for an objective, repeatable, systematic and spatially explicit measure of land degradation. In northeastern South Africa, there are large areas of the former homelands that are widely regarded as degraded. A time-series ... Read more
Improving land cover class separation using an extended Kalman filter on MODIS NDVI time series data

Author: Kleynhans, W ; Olivier JC ; Wessels, Konrad J ; Van Den Bergh F ; Salmon BP ; Steenkamp Karen C Date: 15 Dec 2009 It is proposed that the NDVI time-series derived from MODIS satellite data can be modelled as a triply (mean, phase and amplitude) modulated cosine function. Secondly, a non-linear Extended Kalman Filter is developed to estimate the parameters ... Read more
Influence of using date-specific values when extracting phenological metrics from 8-day composite NDVI data

Author: Bachoo, A ; Archibald, S Date: Jul 2007 Information of vegetation dynamics derived from remotely sensed data is essential for regional natural resource management. A common approach involves using an n-day composite time-series of normalized difference vegetation index (NDVI) ... Read more

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Browsing by Subject "Normalized difference vegetation index"

Browsing by Subject "Normalized difference vegetation index"

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