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在红外制导导弹对抗红外诱饵的过程中,由于在不同条件下红外诱饵的红外辐射特性变化较大,而目标飞机的红外辐射特性变化较小,导致导弹抗干扰概率较大的波动。这就要求在利用数字仿真或半实物仿真方法评估导弹抗干扰性能时,必需建立准确的红外诱饵辐射模型。根据能量守恒定律、黑体辐射定律及波尔兹曼定律推导了红外诱饵辐射计算模型,分析了高度和速度特性对其辐射特性的影响,并据此对诱饵辐射计算模型进行了修正。还给出了长方体和圆柱体两种典型形状诱饵质量燃烧率的计算公式。根据红外诱饵的辐射模型和运动模型编制了仿真软件。辐射模型所需的诱饵高度和速度来自运动模型,而运动模型所需的质量燃烧率来自辐射模型。通过合理地设置参数,该仿真软件可以对各种型号的红外诱饵,在各种对抗条件下的辐射特性进行仿真。最后给出了几组典型的仿真结果并对其进行了分析。
Infrared guided missiles in the process of countering infrared bait, due to different conditions under the infrared bait infrared radiation characteristics of a larger change, while the target aircraft infrared radiation characteristics of small changes, resulting in greater probability of anti-jamming missile fluctuations. This requires the use of digital simulation or semi-physical simulation method to evaluate missile anti-jamming performance, we must establish accurate infrared bait radiation model. According to the law of conservation of energy, the law of blackbody radiation and Boltzmann’s law, the calculation model of infrared bait radiation is deduced. The influence of height and velocity characteristics on the radiation characteristics is analyzed, and the bait radiation calculation model is revised accordingly. The formulas for calculating the mass burning rate of two typical shapes of cuboid and cylinder are also given. According to the radiation model and the motion model of the infrared decoy, the simulation software was compiled. The bait height and speed required for the radiation model come from the kinematic model, while the mass burn rate required for the kinetic model comes from the radiation model. By reasonably setting the parameters, the simulation software simulates the radiation characteristics of various types of infrared decoys under various confrontation conditions. Finally, several typical simulation results are given and analyzed.