Influence of atmospheric turbulence on detecting performance of all-day star sensor

CORC > 西安光学精密机械研究所 > 中国科学院西安光学精密机械研究所 > 空间光学应用研究室

	Influence of atmospheric turbulence on detecting performance of all-day star sensor
	Pan, Yue 1,2; Wang, Hu1 ; Shen, Yang 1,2; Xue, Yaoke 1; Liu, Jie 1
	2016
会议名称	7th international symposium on precision mechanical measurements, ispmm 2015
会议日期	2015-08
会议地点	xia'men, china
关键词	Star sensor All-day Atmospheric turbulence Long-exposure Signal to noise ratio
卷号	9903
英文摘要	all-day star sensor makes it possible to observe stars in all-day time in the atmosphere. but the detecting performance is influenced by atmospheric turbulence. according to the characteristic of turbulence in long-exposure model, the modulation transfer function, point spread function and encircled power of the imaging system have been analyzed. combined with typical star sensor optical system, the signal to noise ratio and the detectable stellar magnitude limit affected by turbulence have been calculated. the result shows the ratio of aperture diameter to atmospheric coherence length is main basis for the evaluation of the impact of turbulence. in condition of medium turbulence in day time, signal to noise ratio of the star sensor with diameter 120mm will drop about 4db at most in typical work environment, and the detectable stellar limit will drop 1 magnitude. © 2016 spie.
收录类别	EI ; ISTP
产权排序	1
会议录	seventh international symposium on precision mechanical measurements
会议录出版者	spie
学科主题	电子、电信技术 ; 光学 ; 天文学、地球科学 ; 机械、仪表
语种	英语
ISSN号	0277786x
ISBN号	9781510601673
内容类型	会议论文
源URL	[http://ir.opt.ac.cn/handle/181661/27861]
专题	西安光学精密机械研究所_空间光学应用研究室
作者单位	1.Xi'An Institute of Optics and Precision Mechanics of CAS, Xi'an, China 2.University of Chinese Academy of Sciences, Beijing, China
推荐引用方式 GB/T 7714	Pan, Yue,Wang, Hu,Shen, Yang,et al. Influence of atmospheric turbulence on detecting performance of all-day star sensor[C]. 见:7th international symposium on precision mechanical measurements, ispmm 2015. xia'men, china. 2015-08.