弹道导弹中段红外辐射特性数学建模与仿真

针对TBM中段的弹道特性,根据热平衡理论建立了TBM在中段的温度计算模型,然后根据普朗克定律建立了目标红外辐射计算模型;在红外辐射的大气传输理论基础上,综合考虑大气吸收、散射及气象条件等各种因素,分析了大气衰减对红外辐射的影响建立了大气透过率的计算模型,得到了大气衰减作用下的目标辐射模型;最后,在假定的仿真条件下,利用模型计算了两种波段下目标红外辐射强度、大气光谱透过率以及经过大气衰减后的红外辐射强度,并对计算结果进行了分析,结果表明,这是一种计算TBM中段红外辐射的有效方法.

TBM's Midcourse Infrared Radiation Traits Modeling and Simulation

According to the trajectory traits of TBM's midcourse, by thermal balance theory, the temperature model is built to calculate the TBM's midcourse temperature. Then, the infrared radiation model of the target is established following Plank law. On the basis of the theory of atmospheric transmission of the infrared radiation, considering factors such as atmospheric absorption, scattering and meteorological condition, the influence of atmospheric attenuation to infrared radiation is analyzed, and the atmospheric transmittance model is established, as well as the target radiation model under the influence of atmospheric attenuation. At last, based on an assumed simulation condition, the target infrared radiation strength of two kinds of waveband, atmosphoreric transmittance rate and the infrared radiation strength after atomospheric attenuation are calculated by the model,and the results are analyzed. The results show that the method is an effective way to calculate TBM's midcourse infrared radiation.