基于熵权灰色关联和D-S证据理论的威胁评估

摘要

为了更好地处理空中威胁目标的不确定性信息,提出了基于熵权灰色关联和D-S证据理论相结合的威胁评估方法.将熵理论应用于求解各指标权重,利用灰色关联法确定各指标的不确信度,进而得到各指标下不同目标的Mass函数,通过D-S证据理论对各Mass函数进行合成,根据置信函数大小对目标进行排序.仿真实验证明该方法是合理有效的.%By combining entropy weight grey incidence with D-S theory of evidence, this paper proposed a method of threat assessment to deal with the uncertain information of aerial threat target. It employed the theory of entropy to acquire the weights of different indices. Meanwhile, it determined uncertain degrees corresponding to different indices through the methodology of grey incidence. Subsequently, it obtained the Mass functions of different targets in different indices. It carried out the fusion of different Mass functions on the basis of D-S theory of evidence, sorted the targets according to the belief function value. A numerical example demonstrates that the aforementioned method is reasonable and effective.