Influencing factors of angle measurement accuracy of an interferometer star tracker

doi:10.37188/CO.2022-0232

CIOMP OpenIR

	Influencing factors of angle measurement accuracy of an interferometer star tracker
	Y.-X. Ruan and L. Dong
	2023
发表期刊	Chinese Optics
ISSN	20971842
卷号	16 期号:6 页码:1433-1441
摘要	In order to improve the traditional attitude measurement accuracy of star sensors, interference angle measuring technology can be combined with a traditional star sensor. Based on the centroid positioning technology of traditional star sensors, the light intensity information of star image points is subdivided to break through the accuracy limitation of centroid positioning and obtain a highly precise interferometric star sensor with a large field of view. In this paper, the factors that restrict the angle measurement accuracy of interferometer sensors are deeply studied with particular interest given to the influence of interference fringe segmentation error on angle measurement accuracy. Through research and analysis, we conclude that the asymmetry error is not the main factor affecting the angle measurement accuracy of interferometric sensors. When the mismatch error between the Moire fringe period and the overall optical dimension of the optical wedge array is less than 1%, the single-factor angle measurement error is less than 0.01". For non-orthogonal error between Moire fringe orientation and an optical wedge’s array arrangement direction, the accuracy error of single-factor angle measurement is sure to be less than 0.01" when the fringe rotation angle is less than 0.1°. Therefore, the above two main errors should be suppressed in the production and assembly so that the measurement accuracy of the interferometer sensor is closer to the high-precision theoretical value. © 2023 Editorial Office of Chinese Optics. All rights reserved.
DOI	10.37188/CO.2022-0232
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收录类别	ei
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文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/67818
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Y.-X. Ruan and L. Dong. Influencing factors of angle measurement accuracy of an interferometer star tracker[J]. Chinese Optics,2023,16(6):1433-1441.
APA	Y.-X. Ruan and L. Dong.(2023).Influencing factors of angle measurement accuracy of an interferometer star tracker.Chinese Optics,16(6),1433-1441.
MLA	Y.-X. Ruan and L. Dong."Influencing factors of angle measurement accuracy of an interferometer star tracker".Chinese Optics 16.6(2023):1433-1441.

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