Research on flexible structure of a space flight prototype Doppler asymmetric spatial heterodyne interferometer

Jianan Dang; Jian Sun; Yutao Feng; Chenguang Chang; Yang Wu

doi:10.1117/12.2580203

5 November 2020 Research on flexible structure of a space flight prototype Doppler asymmetric spatial heterodyne interferometer

Jianan Dang, Jian Sun, Yutao Feng, Chenguang Chang, Yang Wu

Author Affiliations +

Proceedings Volume 11564, AOPC 2020: Optoelectronics and Nanophotonics; and Quantum Information Technology; 115640D (2020) https://doi.org/10.1117/12.2580203
Event: Applied Optics and Photonics China (AOPC 2020), 2020, Beijing, China

Abstract

As a new type of wind field detection technology, Doppler Asymmetric Spatial Heterodyne（DASH）can invert information such as atmospheric wind speed by monitoring the Doppler frequency shift of the absorption line or emission line of the atmospheric composition. It is widely used in the detection of middle and upper atmospheric wind fields. In this paper, a flexible support structure suitable for DASH interferometer is designed, so that the bonding process between different materials has a high safety margin in environmental testing. After modal analysis and random vibration analysis of the whole structure, the results show that the design meets the requirements. First, the fundamental frequency of the interferometer (765.79Hz>100Hz) meets the requirements of general satellites for the load; secondly, the random vibration analysis results show that the bonding stress between the surfaces is less than the allowable stress of the material (2MPa<14MPa), and it has a certain safety margin (>2); finally, the optical parts and structural parts did not collide with the structural parts during the vibration process, and the flexible structure did not undergo plastic deformation, and the whole structure of the interferometer was safe and reliable

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Jianan Dang, Jian Sun, Yutao Feng, Chenguang Chang, and Yang Wu "Research on flexible structure of a space flight prototype Doppler asymmetric spatial heterodyne interferometer", Proc. SPIE 11564, AOPC 2020: Optoelectronics and Nanophotonics; and Quantum Information Technology, 115640D (5 November 2020); https://doi.org/10.1117/12.2580203

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KEYWORDS

Interferometers

Doppler effect

Safety

Structural design

Adhesives

Atmospheric sensing

Heterodyning

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