杜荣华, 廖文和, 张翔. 航天器中远距仅测角导航硬件在环测试的光学模拟器设计[J]. 应用光学, 2023, 44(2): 253-261. DOI: 10.5768/JAO202344.0201003
引用本文: 杜荣华, 廖文和, 张翔. 航天器中远距仅测角导航硬件在环测试的光学模拟器设计[J]. 应用光学, 2023, 44(2): 253-261. DOI: 10.5768/JAO202344.0201003
DU Ronghua, LIAO Wenhe, ZHANG Xiang. Optical simulator design for hardware in loop testing of medium and long range angles-only navigation of spacecraft[J]. Journal of Applied Optics, 2023, 44(2): 253-261. DOI: 10.5768/JAO202344.0201003
Citation: DU Ronghua, LIAO Wenhe, ZHANG Xiang. Optical simulator design for hardware in loop testing of medium and long range angles-only navigation of spacecraft[J]. Journal of Applied Optics, 2023, 44(2): 253-261. DOI: 10.5768/JAO202344.0201003

航天器中远距仅测角导航硬件在环测试的光学模拟器设计

Optical simulator design for hardware in loop testing of medium and long range angles-only navigation of spacecraft

  • 摘要: 设计了一种航天器中远距仅测角导航硬件在环测试的光学模拟器,可对仅测角导航视觉传感器的硬件、软件和算法的性能及可靠性进行验证。首先对该光学模拟器进行了系统描述,包括硬件组成和星图模拟软件设计。硬件选用的都是商用、现成的部组件,可大幅节约研发成本,缩短开发周期。其次,重点阐述屏幕亮度与恒星星等之间的关系,以及该光学模拟器的光学原理。最后对该光学模拟器的星图模拟进行实验测试,并介绍了一种基于Clohessy-Wiltshire (CW)方程的仅测角导航模型,用于硬件在环测试。验证了几何校正后的光学模拟器完全满足航天器中远距仅测角导航硬件在环测试要求,并得出相对于几何校正前,终端时刻的相对位置精度提高了25.5%,相对速度精度提高了31.3%。

     

    Abstract: An optical simulator was designed in loop testing of medium and long range angles-only navigation of spacecraft, which can verify the performance and reliability of the hardware, software and algorithms of the angles-only navigation vision sensor. Firstly, the system description of the optical simulator was given, including the hardware composition and the star map simulation software design. The commercial and off-the-shelf components were selected as the hardware, which could greatly save research and development costs and shorten the development cycle. Then, the relationship between screen brightness and star magnitude, and the optical principle of the optical simulator were emphatically introduced. Finally, the star map simulation of the optical simulator was tested, and an angles-only navigation model based on Clohessy-Wiltshire (CW) equation was introduced for hardware in loop testing, which verified the optical simulator after geometric calibration could be used for hardware in loop testing of medium and long range angles-only navigation of spacecraft. The relative position accuracy is increased by 25.5%, and the relative speed accuracy is increased by 31.3% compared with that before geometric calibration at the terminal time.

     

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