A techn~que for eslmalmg crop coverage usmg h e a r rnlxture rnodelIme, of rnull~-temporal Advanced Verv thah Resolut~on Rad~orneter (AVHRRJ daia is presented for a study area in northem Greece. This paper identifiis some of the problems associated with using satellite sensor data with coarse spatial resolution for crop area estimation. Using satellite sensor imagery with a high spatial resolution to extrapolate ground measurements to AVHRR scales, the paper shows how the mixture model can be applied to AVHRR data in a mixed agricultural system. Crop areas are estimated to an average accuracy of 89 per cent on regional scale using this technique. The results show that this linear mixture modelling has potential for operational crop area monitoring on a regional basis.
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