大气层外弹道式目标群红外成像建模与仿真  

IR imaging modeling and simulation of ballistic target group outside atmosphere

作　　者：刘涛[1,2] 杨德贵[2] 姜卫东[2] 黎湘[2] 

机构地区：[1]海军装备研究院,北京100161 [2]国防科技大学电子科学与工程学院,湖南长沙410073

出　　处：《红外与激光工程》2011年第4期589-594,共6页Infrared and Laser Engineering

基　　金：十一五国防预研项目

摘　　要：针对天基红外传感器对大气层外弹道式目标群的成像仿真问题,建立了有效的目标群红外特性理论模型、天基红外传感器成像模型和成像仿真工作框架。首先,基于诱饵释放过程建立了目标群的弹道运动模型,并分析了阳光与阴影弹道的判断条件,结合弹道目标红外辐射特性计算模型,实现了在不同时刻、不同观测点下的目标群红外辐射特性计算;根据目标群与传感器之间的相对位置关系建立了天基红外传感器观测模型,并分析了传感器对目标群的可观测性,然后结合基于点扩散函数建立的焦平面成像模型,实现了天基红外传感器对大气层外弹道式目标群的动态成像仿真。最后根据仿真结果,分析了天基红外传感器识别弹道式目标群的难点和并提出了解决途径。The effective IR radiation calculation model of ballistic target group,imaging model of space-based IR sensor and imaging simulation framework were presented,aiming at the problem of IR imaging simulation of ballistic target group outside atmosphere.Firstly,based on the course of releasing decoys,the ballistic dynamic model of target group was established,and the condition to judge the trajectory shadow was analyzed.Combined with the IR radiation calculation model of ballistic target,the IR radiant property of the target group was obtained at different time and different observation points.Based on the relative position relationship between target group and sensor,the observation model of space-based IR sensor was established,and observability of the target group through sensor was analyzed.Adopting the IR focal plane model based on point spread function,the imaging simulation of ballistic target group in space-based infrared sensor was realized.The difficulties of ballistic target group discrimination by space-based infrared sensor was analyzed,and the corresponding solutions were presented.

关 键 词：弹道目标 红外辐射 成像仿真 小间距目标 目标识别 

分 类 号：TN219[电子电信—物理电子学]