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星图是星敏感器技术研究中不可或缺的重要数据,利用计算机进行星图模拟成为一种获取星图的捷径。提出一种通过扩展编程,模拟星敏感器光学系统成像过程,获取星图的方法,建立星图模拟系统。首先,在分析光学系统成像模拟基本原理的基础上,讨论利用软件接口,通过扩展编程实现模拟成像的必要性。然后,详细介绍成像模拟、增加噪声和伪星、存储和输出星图等步骤的实现方法,以及扩展编程方法的具体运用。最后给出星图模拟系统的设计结果,并针对给定的光学系统,给出实例,验证模拟方法。结果表明模拟方法正确,操作简便,程序设计工作量少,星图模拟系统人机交互性强,功能多样,提供的数据丰富多样,对于促进星敏感器技术研究具有重要意义。
The star map is an indispensable and important data in star sensor technology research. The use of computer for star map simulation becomes a shortcut for obtaining star map. A method of obtaining the star image by extending the programming, simulating the imaging process of the star sensor optical system, and establishing the star image simulation system are proposed. First of all, based on the analysis of the basic principles of optical system imaging simulation, the necessity of simulating imaging through extended programming is discussed using software interface. Then, the detailed description of imaging simulation, noise and pseudo-stars, storage and output of stars and other steps to achieve the method, as well as extended programming methods of the specific use. Finally, the design results of the star-map simulation system are given. For a given optical system, examples are given to verify the simulation method. The results show that the simulation method is correct, the operation is simple, the programming workload is low, the star chart simulation system has strong man-machine interaction, diverse functions and rich and diversified data, which is of great significance for the research of star sensor technology.