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中文摘要：
针对信息系统毁伤评估中评估目标难以界定的问题,提出了基于能力降阶的毁伤评估模型,将支撑作战任务的信息能力降阶为子任务能力级、信息服务级和服务组件级.分析了毁伤在上下级之间的逻辑传递关系、线性传递关系、指数衰减关系和门限判别关系,并基于解释结构模型,构建毁伤影响关系矩阵,用以分析同级之间的毁伤级联传播关系,定义模型的毁伤评估树结构和评估计算步骤.最后,以防空反导指挥信息系统为算例,分析验证了模型的有效性.
英文摘要：
Due to the problem of hardness to define the assessing target in damage assessment ot mlorma- tion system, a damage assessment model based on ability reduced-order is proposed, in which information ability is degraded into level of sub-tasks ability, level of information services and level of service components. Firstly, the damage transitive relation between different level, including logical relation, linear relation, exponential at- tenuation relation and threshold discrimination relation is analyzed. Based on the interpretative structural mod- el, the transitive relation matrix is constructed, which can be used to analyze the cascade transitive relation of damage in same level, and the structure of damage assessment tree and assessment computation steps are de- fined. Finally, taking the air defence and antimissile C2 information system as the example, validity of the mo- del is analyzed and verified.
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