| Issue |
J. Eur. Opt. Society-Rapid Publ.
Volume 19, Number 2, 2023
|
|
|---|---|---|
| Article Number | 43 | |
| Number of page(s) | 10 | |
| DOI | https://doi.org/10.1051/jeos/2023041 | |
| Published online | 16 November 2023 | |
Research Article
Optical system design method of the all-day starlight refraction navigation system
Space Optics Research Center, Harbin Institute of Technology, Harbin 150001, China
* Corresponding author: wsc_hitoptics@163.com
Received:
4
July
2023
Accepted:
24
October
2023
The application of starlight refraction navigation to spacecraft and space weapons is a significant development direction. Observing enough refracted stars for the star sensor in a strong limb background is an urgent problem. The all-day optical system parameters are analyzed based on the star detection requirement and navigation accuracy. Combined with primary aberration theory, the prime-focus catadioptric optical system is selected to meet the design requirements of a wide field of view (FOV) and tight structure. An H-band (1.52 μm–1.78 μm) star sensor is designed with an FOV of 6°, a focal length of 831 mm, an effective aperture of 253 mm, and a relative distortion of 0.03%. The energy concentration of the star point is 85% within 30 μm, and the maximum lateral chromatic aberration is 2.9 μm, which meets the imaging requirements. Furthermore, a baffle is designed to avoid the influence of direct sunlight on stellar imaging. The proposed method can provide a theoretical foundation and technical support for the optical design of the refraction star navigation.
Key words: Optical design / Starlight refraction / All-day star sensor / Short-wave infrared (SWIR) / Autonomous navigation
© The Author(s), published by EDP Sciences, 2023
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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