弹道中段目标动态红外辐射特性仿真计算

Simulation calculation of synamic infrared radiation characteristics of the target in ballistic midcourse

利用红外光谱辐射特性进行弹道式空间目标探测和识别是一种有效的方法,用该技术探测弹道式空间目标就要对空间目标的红外辐射特性进行研究。在原有目标和诱饵红外辐射特性模型的基础上,综合考虑目标弹道和姿态运动,空间热环境辐射和内热源传热等因素,利用节点网络法建立了弹道中段目标的动态红外辐射计算模型,实现了在不同时刻、不同观测点、不同运动状态下的中段目标红外辐射特性的仿真计算。根据公开的相关资料,设计了两种目标和诱饵,通过对比分析不同弹道条件下目标与诱饵的辐射特性,验证了计算模型的正确性。

The detecting and identifying the space target using infrared spectrum of target is an effective method. The investigation of infrared characteristics is very vital to the method. On the basis of the former infrared characteristics model of ballistic targets and decoys, a logical and accurate IR calculation model of ballistic midcourse target was presented, taking into account the synthetic factors of trajectory and motion, the space environment radiation and the inner heat resource. The radiant intensity of the midcourse target was obtained at different time, different observation points and motion state. According to some public literatures, the structures of target and decoy were supposed. Comparing the infrared radiation characteristics of target and decoy flying along the different trajectory, the rationality of the calculation model was validated.