Ladybeetle-I: design of the brightest beacon lamp for LEO microsatellite

Chao Mei; Hua wei Wang; Bo Yi; Kui Shi

doi:10.1117/12.3015186

30 April 2024 Ladybeetle-I: design of the brightest beacon lamp for LEO microsatellite

Chao Mei, Hua wei Wang, Bo Yi, Kui Shi

Proceedings Volume 13156, Sixth Conference on Frontiers in Optical Imaging and Technology: Imaging Detection and Target Recognition; 131560G (2024) https://doi.org/10.1117/12.3015186
Event: Sixth Conference on Frontiers in Optical Imaging Technology and Applications (FOI2023), 2023, Nanjing, JS, China

Abstract

As a commercial aerospace education satellite, “Ladybeetle-I” has flashed many times around the world, which has attracted the attention of many astronomers. This manuscript presents the design of the beacon lamp of this satellite. Consider the limitation of low power consumption, small volume and light weight of “Ladybeetle-I”, this beacon lamp is designed by the combination of light emitting diode (LED) array structure and total internal reflection (TIR) lens. Firstly, through the analysis of structure parameters, color temperature and working state of LED, the light source of the beacon lamp is realized. Secondly, through the analysis of the requirements parameter of TIR lens, the lens of the beacon lamp is realized. This beacon lamp realizes that the “Ladybeetle-I” in the 547-km LEO can be directly observed by naked eyes within the radius of more than 25 km. Furthermore, the satellite in-orbit test results show that the brightness of the beacon lamp at Sub-Satellite Point is higher than -0.6 magnitude (m) stars. To the best of our knowledge, “Ladybeetle-I”, which utilizes this beacon lamp, is the first and only LEO satellite that can be directly observed by naked eye.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Chao Mei, Hua wei Wang, Bo Yi, and Kui Shi "Ladybeetle-I: design of the brightest beacon lamp for LEO microsatellite", Proc. SPIE 13156, Sixth Conference on Frontiers in Optical Imaging and Technology: Imaging Detection and Target Recognition, 131560G (30 April 2024); https://doi.org/10.1117/12.3015186

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KEYWORDS

Lamps

Light emitting diodes

Satellites

Design and modelling

Transmittance

Eye

Light sources

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