In distributed sensor detection fusion systems,all sensors pass their decisions about thesame hypotheses to a fusion center that combines them to form the final decision。 A subopti-mal decision fusion scheme that minimizes the probability of error at the fusion center center is pre-sented, which consists of a minimum-error-probability(MEP)test at the fusion center andlikllhood ratio tests at the sensors.Based on the scheme,an analysis of reciever operation char-acteristics(ROC ) without and with degree ...