Frequency response of imaging quality by micro-vibration for large-aperture space-borne telescope

	Frequency response of imaging quality by micro-vibration for large-aperture space-borne telescope
	Zhu, J.-Q.; W. Sha; C.-Z. Chen; X.-X. Zhang and J.-Y. Ren
	2016
发表期刊	Guangxue Jingmi Gongcheng/Optics and Precision Engineering
卷号	24 期号:5
摘要	The imaging quality of a large-aperture space-borne telescope is very sensitive to the micro-vibration induced by space environmental variation and the vibration inner of a satellite. Therefore, this paper researches the calculation method of frequency response of imaging quality effected by the micro-vibration to improve the dynamic imaging quality of the satellite in orbit. By using a real optical model to replace the linear optical model, it establishes an optical-mechanical integrated model to calculate the frequency response of the micro-vibration. Firstly, it builds Finite Element Model (FEM) for a space-borne telescope to calculate the structural frequency response and to obtain the displacement and phase of the optical surface nodes for each sampling frequency point. Then, the Monte-Carlo statistical method is used to establish the the optical-mechanical integrated model, and the root-mean-square (RMS) of system dynamic Modulation Transfer Function (MTF) and the Line of Sight (LOS) drift are analyzed to measure dynamic imaging performance of the large-aperture space-borne telescope. Finally, a structural prototype of large-aperture space-borne telescope is developed to verify the reliability of the FEM. The results show that the measured frequency is close to that of the FEM analysis and the error is under 5%, which meets the requirements of large-aperture space-borne telescopes for analysis of the dynamic imaging quality. 2016, Science Press. All right reserved.
文章类型	期刊
收录类别	EI
语种	中文
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/57495
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Zhu, J.-Q.,W. Sha,C.-Z. Chen,et al. Frequency response of imaging quality by micro-vibration for large-aperture space-borne telescope[J]. Guangxue Jingmi Gongcheng/Optics and Precision Engineering,2016,24(5).
APA	Zhu, J.-Q.,W. Sha,C.-Z. Chen,&X.-X. Zhang and J.-Y. Ren.(2016).Frequency response of imaging quality by micro-vibration for large-aperture space-borne telescope.Guangxue Jingmi Gongcheng/Optics and Precision Engineering,24(5).
MLA	Zhu, J.-Q.,et al."Frequency response of imaging quality by micro-vibration for large-aperture space-borne telescope".Guangxue Jingmi Gongcheng/Optics and Precision Engineering 24.5(2016).

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