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针对多传感器分布式检测信息融合系统 ,研究了在N P检验准则下的融合算法。该算法在局部检测时使用了似然比检验 ,而在融合中心则使用了N P检验。针对典型瑞利分布环境给出了融合中心采用AND、OR和K/N三种融合规则时 ,检测门限、检测概率Pd、虚警概率Pf 和信噪比之间的对应关系。仿真结果验证了算法的有效性 ,并证实了三种融合规则均可提高全局检测性能。
Aiming at the multi-sensor distributed detection information fusion system, the fusion algorithm under N P test criterion is studied. The algorithm uses a likelihood ratio test for local detection and a N P test for fusion centers. For the typical Rayleigh distribution environment, the correspondence between detection threshold, detection probability Pd, false alarm probability Pf and signal-to-noise ratio is given when the fusion center adopts three fusion rules of AND, OR and K / N. The simulation results verify the effectiveness of the algorithm and confirm that all three fusion rules can improve the global detection performance.