空间目标天基光学观测的序列图像仿真方法

Simulation of space-based optical measurement serial images

利用STK和OpenGL,提出了一种能体现空间目标天基光学观测系统真实成像距离和系统性能的序列图像仿真方法。首先建立空间目标的三维模型和轨道模型,利用STK预测目标卫星和观测卫星的相对几何关系,然后在分析相机针孔成像和OpenGL透视投影成像模型关系的基础上,通过设置OpenGL的有关参数生成了包含目标和成像系统信息在内的目标仿真图像,最后生成运动空间目标近距离光学观测的二维图像序列,可为天基空间目标识别研究提供数据基础。

The method of serial images simulation which can embody the range and system performance of actual space-based optical measurement systems is put forward based on STK and OpenGL.The 3D model and orbital model of target satellite are constructed and the limitative visible range and relative geometry relationship are forecasted by STK.Based on the analysis of the relationship between the imaging mechanism of OpenGL in the sight of projective geometry and the pinhole imaging model of real imaging system,high fidelity simulated image including target and imaging systems information is generated by setting correlative OpenGL parameters appropriately.At last the close quarters serial images of moving space object are simulated.It can provide data base for the research of space-based target identification technology.