论文部分内容阅读
视景仿真可用于空间望远镜设计、分析和检测。基于坐标变换原理和等角投影法计算了望远镜随着空间载体运动指向不同观测区域时的视场边界,利用星表数据和Matlab地图数据实现了空间望远镜对空和对地观测的二维动态视景仿真,获得了与理论经验相符的仿真结果。结果表明,当空间望远镜指向高纬度区域时等距圆柱投影星图和地图上的圆形视场出现失真,纬度越高,失真越大;对地观测时,地面圆视场边界的地心张角随空间载体高度的增加而增大。应用该仿真方法为某空间望远镜外场实验添加星空背景,效果良好。对在地面上检测空间望远镜工作性能,模拟空间望远镜的工作环境具有一定意义。
Visual simulation can be used for space telescope design, analysis and testing. Based on the principle of coordinate transformation and isometric projection, the field of view of the telescope is calculated when the spacecraft moves in different observation areas with space carrier. The two-dimensional dynamic images of space telescope and earth observation King simulation, obtained with the theoretical experience of the simulation results. The results show that when the space telescope points to the high latitude area, the equidistant cylindrical projection star map and the circular field of view on the map appear distorted. The higher the latitude, the greater the distortion. When observing the earth, the center of the circle The angle increases with the height of space carrier. Applying this simulation method to add sky background to a space telescope field experiment, the effect is good. It is of significance to test the working performance of the space telescope on the ground and simulate the working environment of the space telescope.