On-orbit correction method for limb pointing error of ozone detector

doi:10.3788/OPE.20192703.0569

CIOMP OpenIR

	On-orbit correction method for limb pointing error of ozone detector
	W.-P.Wu; Q.-J.Ma; S.-R.Wang
	2019
发表期刊	Guangxue Jingmi Gongcheng/Optics and Precision Engineering
ISSN	1004924X
卷号	27 期号:3 页码:569-576
摘要	To improve the accuracy of the atmospheric inversion of an ozone observation instrument and to overcome the effects of thermal distortion and satellite attitude error on the orbit for the accuracy of limb pointing, an error correction method for the limb pointing of an ozone detector on the orbit was established. First, through the analysis of low-magnitude star energy and based on observations, an appropriate star observation window and integration time were designed. The blur spot of a star was obtained using flat glass. An image motion compensation technique was then used to ensure the blur spot was stable. The position of the star in the image plane was calculated using a threshold centroid. Subsequently, based on the satellite orbit and detector geometry, a pointing correction method was designed and the pointing accuracy was analyzed after being modified. The results of star observation experiments on the ground show that with this method, the error of stellar positioning is less than 1.83" and the pointing error of the visual axe is less than 3.08". When the encoder repeats accuracy is 2.47", the positioning error of the scanning mirror in the limb observation axis is within 3.95", and the accuracy of limb pointing of the ozone detector is better than 7.9", which fully meets the inversion accuracy requirement of 12.4". 2019, Science Press. All right reserved.
关键词	Orbits,Electromagnetic wave attenuation,Error correction,Motion compensation,Ozone,Stars
DOI	10.3788/OPE.20192703.0569
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收录类别	EI
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/62942
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	W.-P.Wu,Q.-J.Ma,S.-R.Wang. On-orbit correction method for limb pointing error of ozone detector[J]. Guangxue Jingmi Gongcheng/Optics and Precision Engineering,2019,27(3):569-576.
APA	W.-P.Wu,Q.-J.Ma,&S.-R.Wang.(2019).On-orbit correction method for limb pointing error of ozone detector.Guangxue Jingmi Gongcheng/Optics and Precision Engineering,27(3),569-576.
MLA	W.-P.Wu,et al."On-orbit correction method for limb pointing error of ozone detector".Guangxue Jingmi Gongcheng/Optics and Precision Engineering 27.3(2019):569-576.

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