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对红外成象自寻的制导导弹半实物仿真系统精度的最优分配进行了研究,提出了基于半实物仿真系统各设备误差对整个仿真系统仿真精度影响灵敏度和各设备造价概型函数的精度最优分配方法.文中描述了影响系统仿真精度的主要因素及灵敏度的计算方法、各设备造价概型函数的计算方法和半实物仿真系统仿真精度的最优分配方法.该方法适应于各种自寻制导武器的半实物仿真系统的最优分配,同时突出了红外成象系统对精度分配的影响“,”A new method of distributing the precision of a simulation system with HWIL(hardware in the loop)for infrared imaging homing missile is proposed,based on the sensitivity of the system simulative precision to the equipment errors and the total system cost.It is given in this paper the dominant factors which influence the system simulative precision,considerations of calculating sensitivities,the calculation relationship between system cost and equipment error,and a method of distributing the system precision optimally.The method can be applied to optimal distribution of other simulation systems with HWIL for other homing missile,especially for infrared imaging systems.