Title :
Atmospheric and angular effects on NDVI temporal profiles derived from ADEOS-POLDER data over India
Author :
Sridhar, V.N. ; Ghosh, Ranendu ; Mahtab, Anjum
Author_Institution :
Remote Sensing Appl., Area Space Appl. Centre, Ahmedabad, India
fDate :
5/1/2001 12:00:00 AM
Abstract :
The variations of NDVI for crops, semi-evergreen forest, dry deciduous forest, and sand have been analyzed as a function of date of acquisition at 670 and 865 am using ADEOS-Polarization and Directionality of Earth Resources (POLDER) data acquired over India. After correcting the data for atmospheric effects, a semi-empirical bidirectional reflectance distribution function (BRDF) model has been fitted to the data to extract angularly normalized target reflectances. It is shown that atmospheric corrections and angular normalization are important in the quantitative analysis of NDVI and its temporal variations
Keywords :
vegetation mapping; ADEOS-POLDER data; BRDF model; India; NDVI temporal profiles; POLDER data; Polarization and Directionality of Earth Resources data; angular effects; angular normalization; angularly normalized target reflectances; atmospheric corrections; atmospheric effects; crops; dry deciduous fores; sand; semi-empirical bidirectional reflectance distribution function; semi-evergreen forest; Atmospheric modeling; Data mining; Distribution functions; Earth; Pixel; Polarization; Reflectivity; Satellites; Soil; Sun;
Journal_Title :
Geoscience and Remote Sensing, IEEE Transactions on
