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深空背景中机动目标光谱辐射探测是目标机动模式和属性识别的重要研究内容.基于光谱散射和辐射理论,首先建立了复杂背景环境中目标反射背景辐射分布函数,然后根据气动加热引起的目标蒙皮温度场分布情况,建立了角水平和角俯仰的目标本征光谱辐射模型;结合空间目标运动方程和目标本体坐标系与探测器坐标系之间的旋转关系矩阵,重点分析了目标不同机动模式下光谱响应信号的时空过程性变化特点.仿真实验结果表明,探测器中的光谱响应信号因目标时空域的变化而呈现不同的特点,说明了目标机动模式与光谱响应信号间存在显著的特征映射关系,这为解决目标运动模式可分性问题提供了可行性,同时得出了目标姿态和空域相对位置是影响光谱响应信号特征的主要因素的结论.
Spectral radiation detection of maneuvering target in deep-space background is an important research topic of target maneuvering mode and attribute recognition.Based on spectral scattering and radiation theory, the radiation distribution function of target reflecting background in complex background is firstly established, and then the target radiation caused by aerodynamic heating Based on the spatial object motion equation and the rotation matrix between the target ontology coordinate system and the detector coordinate system, the target maneuver modes The time-space process change characteristics of the spectral response signal are simulated.The simulation results show that the spectral response signal of the detector presents different characteristics due to the change of the target space-time domain, indicating that there is a significant feature mapping between the target mobile mode and the spectral response signal This provides the feasibility to solve the problem of the separability of the target motion mode and concludes that the target position and the relative position of airspace are the main factors affecting the characteristics of the spectral response signal.