论文部分内容阅读
分块式空间望远镜的波前传感及控制方法是实现高分辨率成像的关键。空间望远镜在轨展开后,由于空间环境及光学系统本身的特点,存在位置和面形误差,波前误差动态范围大、空间频率覆盖宽,需要采用分级校正的方法逐步减小误差。给出了波前校正流程及相应的波前传感及控制方法。利用Zemax软件建立了同轴偏场三反射镜系统仿真模型,并对主镜进行了分块设计。针对该系统模型,建立了分块式空间望远镜系统波前传感及控制集成仿真软件,通过分析分块主镜的波前误差校正过程验证了算法的可行性。
The wavefront sensing and control method of the segment space telescope is the key to achieve high-resolution imaging. Due to the characteristics of the space environment and the optical system itself, the space telescope has position and surface shape errors. The dynamic range of the wavefront error is large and the space frequency coverage is wide. Therefore, it is necessary to gradually reduce the error by using the method of level correction. The wavefront correction process and corresponding wavefront sensing and control methods are given. The simulation model of coaxial three-mirror system with Zemax software was established, and the main mirror was divided into blocks. According to the system model, wavefront sensing and control integrated simulation software of the block space telescope system is established. The feasibility of the algorithm is verified by analyzing the wave front error correction process of the block main mirror.