光谱解混定义:Spectralunmixingistheprocedurebywhichthemeasuredspectrumofamixedpixelisdecomposedintoacollectionofconstituentspectra,orendmembers,andasetofcorrespondingfractions,orabundances,thatindicatetheproportionofeachendmemberpresentinthepixel.【spectralunmixing,2002】光谱混叠产生原因：First,讦thespatialresolutionofasensorislowenoughthatdisparatematerialscanjointlyoccupyasinglepixel,theresultingspectralmeasurementwillbesomecompositeoftheindividualspectra.Thisisthecaseforremotesensingplatformsflyingatahigh
