A system for obtaining a estimate of a physical parameter. The system is a multiple point system, in that estimates are obtained from a number of distributed sensors at a single observation time, or alternatively, from a single sensor at a number of observation times. Each sensor point is associated with a processor that calculates an estimate pair, consisting of an estimate of the parameter and a variance. Each estimate pair is used to construct a membership function. The membership functions are combined, and the combined function is optimized to determine a final estimate.
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