具有均匀天空背景的高精度静态星模拟器设计（英文）

Design of High-precision Static Star Simulator with Uniform Sky Background

为解决现有星模拟器只关注星图模拟精度而忽略天空背景模拟的问题,设计了具有均匀天空背景的高精度静态星模拟器.重点阐述星模拟器的组成和工作原理,详细论述光学系统优化设计方法.根据模拟器光学系统透镜大、精度高的特点,采用筒套筒的镜筒设计形式;为了保证星图模拟精度,采用激光直写技术制作星点板,刻划精度优于±1μm.测试结果表明:设计的具有均匀天空背景的高精度静态星模拟器的星图模拟精度优于3″,天空背景均匀性优于95%,满足导航敏感器的高精度地面标定与功能测试需求.

To solve the problem that the existing star simulators are only concerned with the precision of star map simulation while neglects the sky background simulation, a high-precision static star simulator was designed under a uniform background of sky. In this paper, the components and operating principles of the star simulator were elaborated emphatically, and the optimal design method was also discussed in detail for the optical system. According to simulator＇s optical system which was featured with big lens and high precisions, the lens cone was designed to have a fixed, tube-in-tube structure. Moreover, in order to guarantee the precision of star map simulation, the laser direct writing technology was adopted to fabricate star testers with a precision exceeding ± 1 μm. Test results indicated that the star map simulation precision of the designed high-precision static star simulator with a uniform sky background is greater than 3＂and the sky background uniformity is larger than 95%. Therefore, it is able to satisfy requirements of high-precision ground calibration and functional test for navigation sensors.