天基空间目标成像仿真系统设计与实现

Design and Implement of Space-Based Target Imaging Simulation System

设计了一个基于可见光成像并针对空间点目标的天基空间目标成像仿真系统。分析了天基空间目标探测成像的过程,据此将成像仿真过程分为轨道仿真、恒星背景成像仿真、目标成像仿真及电荷耦合器件(CCD)传感器系统仿真四个部分。在空间目标仿真部分将卫星主体简化为长方体、圆柱体及球体三种结构,借鉴雷达截面积提出了目标的光学截面积,利用目标光学截面积可以简单快速地得到目标在成像平面上的亮度大小。该系统实现了基于可见光成像的远距离天基空间点目标成像仿真,可以获取任意观测时段、任意轨道下不同主体结构的空间目标观测仿真图像。

A space-based target imaging simulation system based on visible imaging is designed and implemented for space point target. The space-based target detection imaging process is analyzed. The imaging simulation process is divided into four parts： orbit simulation, star background imaging simulation, target imaging simulation and charge coupled device （CCD） sensor simulation. In the part of target imaging simulation, satellite structures are simplified as rectangles, cylinders and spheres. The concept of target optical cross section is proposed reference for radar cross section. The brightness of target on imaging plane is calculated easily and quickly using the target optical cross section. The proposed system based on visible imaging achieves space-based space point target imaging simulation over a long distance. The observation simulation image of space target is obtained by the proposed system at any time, on any orbit with different major structures.