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This paper revisits a well-known fully constrained least squares (FCLS) method developed by Heinz and Chang and develops an approach to finding analytical solutions to FCLS, called analytical FCLS (AFCLS) which can be solved in closed forms instead of FCLS being solved by numerically algorithms. As a result, the AFCLS-unmixed results using analytical solutions are more accurate than FCLS-unmixed results...
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