航空学报 > 2020, Vol. 41 Issue (8): 623536-623536   doi: 10.7527/S1000-6893.2020.23536

地球卫星星光折射导航量测量及其性能对比

宁晓琳1, 梁晓钰2, 孙晓函2, 王帆2, 王龙华2, 房建成2   

  1. 1. 北京航空航天大学 前沿科学技术创新研究院, 北京 100083;
    2. 北京航空航天大学 仪器科学与光电工程学院, 北京 100083
  • 收稿日期:2019-09-29 修回日期:2019-11-06 出版日期:2020-08-15 发布日期:2020-02-13
  • 通讯作者: 梁晓钰 E-mail:liangxiaoyu17@buaa.edu.cn
  • 基金资助:
    国家自然科学基金(61722301);空间智能控制技术重点实验室开放基金(ZDSYS-2017-04)

Satellite stellar refraction navigation measurements and their performance: A comparison

NING Xiaolin1, LIANG Xiaoyu2, SUN Xiaohan2, WANG Fan2, WANG Longhua2, FANG Jiancheng2   

  1. 1. Research Institute for Frontier Science, Beihang University, Beijing 100083, China;
    2. School of Instrument Science&Opto-electronics Engineering, Beihang University, Beijing 100083, China
  • Received:2019-09-29 Revised:2019-11-06 Online:2020-08-15 Published:2020-02-13
  • Supported by:
    National Natural Science Foundation of China (61722301);Funded by Science and Technology on Space Intelligent Control Laboratory (ZDSYS-2017-04)

摘要: 星光折射天文导航是一种重要的地球卫星自主导航方式,量测量是影响其导航精度的重要因素。在地球卫星星光折射导航中,折射视高度、星光折射角、折射星像素坐标(折射星矢量)是3种常用的量测量,结合星光折射导航的基本原理重点介绍了这3种量测量的获取方法和量测模型,通过仿真和可观性分析比较了相同条件下3种量测量的导航性能。仿真结果表明,由于折射星像素坐标可以同时反映星光折射的大小和方向可观性高,而星光折射角和折射视高度仅能反映星光折射的大小,无法反映其方向可观性低,因此折射星像素坐标的导航性能优于星光折射角和折射视高度。此外,本文也对星敏感器精度、卫星轨道高度、星敏感器安装夹角3种因素对3种方法导航性能的影响进行了分析。

关键词: 星光折射导航, 折射视高度, 星光折射角, 折射星像素坐标, 量测量

Abstract: Stellar refraction celestial navigation is an important autonomous navigation method for earth satellites. Measurements are an important factor influencing the navigation accuracy. The refraction apparent height, stellar refraction angles, and refraction star pixel coordinates (refraction star vectors) are three commonly used measurements of the satellite stellar refraction navigation. The obtainment methods and measurement models of the three measurements are introduced on the basis of the fundamental principle of the stellar refraction navigation. Under the same conditions, the navigation performance of these three measurements are compared through simulation and observability analysis. The simulation results show that the observability of the refraction star pixel coordinates is high, because this measurement contains both the magnitude and direction of the star refraction rays, while the stellar refraction angle and the refraction apparent height can only reveal the magnitude of the stellar refraction, exhibiting low direction observability. Therefore, the navigation performance of the refraction star pixel coordinates (refraction star vectors) is better than that of the other two measurements. Furthermore, the influence of three factors, namely, the accuracy of the star sensor, the satellite orbit height, and the installation angle of the star sensor, on the navigation performance of the three methods is analyzed.

Key words: stellar refraction navigation, refraction apparent height, stellar refraction angle, refraction star pixel coordinates, measurements

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