Calculation of the Terrestrial Vegetation Index VIUPD Using MODIS

VIUPD is a new vegetation index based on the UPDM, which uses almost the whole vegetation information obtained by each sensor. It has been verified that the VIUPD is sensitively to reflect the amount of vegetation and the degree of vegetation vigor by using ground-measured data. This paper give an introduction of calculating the VIUPD, the results demonstrate that our conclusions are correct by comparing it with NDVI and EVI.