中段目标平动及微动的红外辐射特性分析北大核心CSCD

红外辐射特性是对弹道目标进行探测和识别的主要依据之一,而目标结构、材料、空间位置、运动形式都会对其辐射特性造成影响。论文针对天基红外探测场景下中段目标平动及微动的辐射特性分析开展研究。首先构建天基红外探测场景模型,通过轨道仿真计算不同时刻中段目标的空间位置、相对探测器的空间姿态等参数;其次基于中段目标红外辐射模型,综合考虑不同位置及姿态参数下太阳辐射、地球背景辐射等参数,计算相应的目标温度与辐亮度等;最后综合考虑目标相对探测器的空间距离及姿态,仿真不同波段下红外探测器获得的中段目标辐照度,以及不同运动形式对辐照度的影响。仿真结果表明,目标微动对辐射特性的影响不可忽视,可作为目标识别的一个特征,为后续目标探测与识别提供数据支撑与指导。

Analysis of infrared radiation characteristics of mid course target translational and fretting

Infrared radiation characteristic is one of the main bases for detecting and identifying ballistic target,which are affected by the structure,material,spatial position and form of movement of the target.In this paper,the radiation characteristics of the translational and fretting targets in the middle section under space based infrared detection scenarios are studied.Firstly,a space based infrared detection scene model is constructed,and orbit simulation is used to calculate the spatial position of the target and the spatial attitude of the detector at different time points.Secondly,based on the infrared radiation model of mid range target,the corresponding target temperature and radiance are calculated by comprehensively considering the solar radiation and earth background radiation under different position and attitude parameters.Finally,considering the space distance and attitude of the target relative to the detector comprehensively,the irradiance of the target in the middle range obtained by the infrared detector in different wavebands is simulated,and the influence of different motion forms on the irradiance.The simulation results show that the influence of target fretting on radiation characteristics cannot be ignored,which can be used as a feature for target recognition,providing data support and guidance for subsequent target detection and recognition.