Hi,
I work on a diachronic map of vegetation, I use RGB NDVI technique , this technique is based on the use of three ndvi taken in three different dates to quantify the change of the green biomass through the three dates (1984, 2001, 2016), The three NDVI are assigned to red green and blue channels respectively. in my case, NDVI's of 1984 and 2001 are produced from Landsat TM 5 images, but NDVI 2016 is produced from a Landsat 8 image,I want to know if the use of NDVI from different sensors (landsat 5 et landsat 8) influences the quality of the results, otherwise, should I use the same sensor data.
thaaaaank's a lot.