In order to solve the problem of the command decision⁃making modeling in army operational simulation, on the basis of analyzing the characteristics of the external decision model, this paper puts forward the external decision model of ar⁃my operational simulation based on situation description, and discusses the principle of this model, and then focus on deeply studying the situation description in the army operational simulation. The situation description method is proposed based on four kinds of entity information, which is based on the position, the state of the damage, the status of the task, the informa⁃tion of the message and so on. This construction provides a new way to build the decision⁃making model.%为解决陆军作战行动仿真中指挥决策模型的建模问题,在分析外部决策模型特点的基础上,提出了基于态势描述的外部决策模型,并对模型实现的原理进行了论述,重点对陆军作战行动仿真中态势描述这一核心问题进行了深入研究,提出了基于位置状态、战损状态、任务状态和消息信息等四类实体信息的态势描述方法,为决策模型的构建提供了新思路。
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