飞机红外辐射特征仿真研究

真实有效的飞机辐射特征,不仅可以提高导弹的抗干扰能力,还有利于拟定合理有效的防御策略,提高飞机的生存力。基于辐射特征考虑,建立了飞机尾喷口、尾焰、蒙皮以及机体反射的辐射模型；引入大气传输模型,定义了波段平均透过率；通过模型仿真,定性地分析了排气系统(尾喷口、尾焰模型联立)和蒙皮的红外辐射分布规律。将排气系统和蒙皮辐射模型代入大气传输模型之中,分析了飞机红外辐射的高度特性。通过对比仿真与实测结果,验证模型的可靠性。

Study on infrared radiation characteristics of aircraft

The real and effective radiation characteristics of aircraft can increase anti-jamming capability of missile and can be beneficial to make reasonable and effective defensive strategy,which can improve aircraft survivability.Based on radiation characteristics,the radiation models of aircraft nozzle,plume,skin,airframe reflection were established.The model of atmospheric transmission was introduced,and the waveband average transmittance was defined.Through model simulation,the infrared radiation distributions of exhaust system (combining aircraft nozzle with plume) and skin were qualitatively analyzed.The height characteristics of aircraft infrared radiation were analyzed by putting the model of exhaust system and skin into the model of atmospheric transmission simultaneously.Compared the data of simulation with the actual measurement,the reliability of the model is verified.