For precise threat assessment of attack target, and acquiring best interception efficiency for aircraft carrier formation, establish target threat assessment model for aircraft carrier formation cooperative air defense based on cloud model. Through analyzing air defense threat assessment factor, establish threat assessment index system based on target attack capability, attack intent, attack speed and relative value of the ship. Use different value membership degree of every ship, calculate treat sequence of air attack target to whole formation and carry out simulation verification. The simulation results show that: the model can correctly deal with and effectively integrate data, acquire correct results rapidly and provide a reference for the aircraft carrier formation air defense operation.%为准确判断来袭目标的威胁程度，使舰艇编队取得最佳的拦截效果，构建一种基于云模型的航母编队协同防空作战目标威胁评估模型。通过分析防空作战威胁评估因素，从攻击能力、攻击意图、攻击速度和舰艇相对价值这4个方面构建威胁评估指标体系，利用每艘舰艇的价值隶属度不同，计算出空袭目标对整个编队的威胁排序，并进行仿真验证。仿真结果表明：该模型能对数据进行合理处理和有效融合，准确快速地得出结果，为航母编队防空作战决策提供一定参考。
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