天基空间目标可见光相机探测能力分析

空间目标可见光相机的探测能力与空间目标可见光特性、探测器件性能指标等因素有关。为得到空间光学相机对200~1 500 km中低轨道可见光目标的探测能力,基于基本辐射理论,综合考虑空间目标几何特性、背景特性与材料特性,建立空间目标特性的数学模型,在可见光0.4~0.7μm谱段进行仿真计算。得出可见光相机对中低轨道空间目标探测能力的理论计算方法,并得出相关光学参数计算公式,为空间光学相机的设计提供理论支持。

Analysis on detection ability of space-based space target visible camera

Space target detection ability of visible light camera is related to the visible characteristics of the space target,detector performance and other factors.To get the detection ability of space optical camera on medium-orbit and low-orbit space target at the distance from 200 to 1 500 km,a mathematical model of space target characteristics was established based on the basic theory of radiation by considering geometry,background,and material characteristics of the space target.Furthermore,a simulation was conducted at the spectral bands of 0.4 to 0.7 μm.The theoretical calculations of detection ability on medium-orbit and low-orbit space target by the visible light camera was got and the formula of related optical parameters was also obtained.These conclusions can provide theoretical support for the design of space optical camera.