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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。
In order to solve the imaging simulation problem of space-based ballistic targets in space-borne infrared sensors, an effective theoretical model of target infrared properties, imaging model of space-based infrared sensors and imaging simulation framework are established. Firstly, the trajectory model of the target group was established based on the process of decoy release, and the judgment conditions of the sun and shadow trajectory were analyzed. Combined with the calculation model of the ballistic target infrared radiation characteristics, the target group infrared radiation at different time and different observation points Based on the relative position relationship between the target group and the sensor, an observational model of the space-based infrared sensor is established and the observability of the sensor to the target group is analyzed. Then, with the focal plane imaging model established based on the point spread function, Dynamic Imaging Simulation of Spaceborne Ballistic Target Group by Space - based Infrared Sensors. Finally, based on the simulation results, the difficulties of identifying ballistic target groups by space-based infrared sensors are analyzed and the solutions are provided.