基于熵权的灰色关联辐射源威胁评估

辐射源威胁评估可为后期干扰资源配置及任务分配提供依据,是机载自卫电子对抗的重要研究课题。针对评估指标少、不全面的问题,从影响威胁等级的距离估计指标、分辨力估计指标、概率估计指标和平台指标出发建立辐射源威胁评估体系,通过参数集输入计算出各指标值;然后运用基于熵权的灰色关联方法,通过熵权法对权重客观赋值,结合最优、最劣关联度,得到灰色关联相对贴近度;最后,对贴近度排序,评判威胁等级。仿真表明,定量计算与定性分析结果的一致说明了算法的有效性;与选取的2种改进算法进行威胁排序与运算时间的对比,其结果的一致和运算时间上的优势说明了算法的可行性和时效性。

A Grey Correlation Method Based on Entropy Weight in Emitter Threat Assessment

The emitter and threat level evaluation can provide a basis for configuring jamming resources and mission of assignment, and is a vital research subject of the airborne active self-defense electronic countermeasure. Aimed at the problems that the assessment indexes are few and incomprehensive, this paper establishes an emitter-threat assessment system to the needs of effect on the distance estimation index, resolution estimation index, probability estimation index and platform index. The paper calculates each index through parameter set. Then, the paper uses the grey correlation based on the entropy weight to figure out the optimal correlation degree. Finally, the paper judges the threat level by comprehensive relative closeness coefficient. The simulation example shows that though analyzing the result and comparing the method among other three methods, the merits prove the effectiveness and the feasibility of the method.