尾焰红外辐射强度是导弹预警系统设计所需的重要参数。根据尾焰红外辐射的基本理论以及合理等效，建立了导弹主动段尾焰辐射强度工程计算模型，可用于主动段尾焰辐射强度理论模型的验证及快速估算预报，在此基础上建立了尾焰红外辐射强度随观测角度的变化规律模型，以美国大力神火箭（TITAN II）的实验结果为参考标准，对比了该模型与其他模型的计算精度，结果表明该模型均方根误差约是GASL理论模型的1/4，最大误差约是 sinθ模型的1/3，并以阿特拉斯导弹（SM-65）和战斧导弹（BGM-109A）为例进行了仿真，结果符合经验规律。%The infrared radiant intensity of missile plume,as an important parameter,has been applied to the designing of space-based early warning system. On the basis of infrared radiant theory and equivalent, an empirical model was built. This model can be used to validate the result of theoretical model and estimate the intensity rapidly. The scaling law was built to show the variation of intensity and aspect angle, the result of this model was compared with GASL model and sinθ model referring to TITAN II rocket plumes, it shows that the RMSE of this model is 1/4 than GASL model, the maximum error is 1/3 than sinθ model, the simulation results of Atlas SM-65 and Tomahawk BGM-109A meet the empirical regularity.
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