NDVI(Normalized Difference Vegetation Index) is an important vegetation index,extensively used to indicate vegetation status.But due to its anisotropy or bidirectionality,there are many limitations when to develop the model between NDVI and vegetation parameters and the precision of model is low.In order to develop reliable model,it is necessary to know about the bidirectionality of NDVI.SAILH model can model BRDF of vegetation canopy,so based on the BRDF of canopy the bidirectional distribution of NDVI can...
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