IMPROVING THE PRECISION OF ASTROMETRY FOR SPACE DEBRIS

CORC > 紫金山天文台 > 中国科学院紫金山天文台 > 空间目标与碎片观测研究基地

	IMPROVING THE PRECISION OF ASTROMETRY FOR SPACE DEBRIS
	Sun, Rongyu; Zhao, Changyin; Zhang, Xiaoxiang
刊名	ASTRONOMICAL JOURNAL
	2014-03-01
卷号	147 期号:3 页码:0
关键词	astrometry methods: data analysis techniques: image processing
ISSN号	0004-6256
英文摘要	The data reduction method for optical space debris observations has many similarities with the one adopted for surveying near-Earth objects; however, due to several specific issues, the image degradation is particularly critical, which makes it difficult to obtain precise astrometry. An automatic image reconstruction method was developed to improve the astrometry precision for space debris, based on the mathematical morphology operator. Variable structural elements along multiple directions are adopted for image transformation, and then all the resultant images are stacked to obtain a final result. To investigate its efficiency, trial observations are made with Global Positioning System satellites and the astrometry accuracy improvement is obtained by comparison with the reference positions. The results of our experiments indicate that the influence of degradation in astrometric CCD images is reduced, and the position accuracy of both objects and stellar stars is improved distinctly. Our technique will contribute significantly to optical data reduction and high-order precision astrometry for space debris.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	FOLLOW-UP OBSERVATIONS ; IMAGE-RECONSTRUCTION ; ORBIT IMPROVEMENT ; SOURCE EXTRACTION ; OPTICAL SURVEYS ; GEO OBJECTS ; SOFTWARE ; SEARCH ; MOTION
收录类别	SCI
原文出处	10.1088/0004-6256/147/3/58
语种	英语
WOS记录号	WOS:000331125600013
公开日期	2014-11-20
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/10601]
专题	紫金山天文台_空间目标与碎片观测研究基地
作者单位	Chinese Acad Sci, Purple Mt Observ, Key Lab Space Object & Debris Observat, Nanjing 210008, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Sun, Rongyu,Zhao, Changyin,Zhang, Xiaoxiang. IMPROVING THE PRECISION OF ASTROMETRY FOR SPACE DEBRIS[J]. ASTRONOMICAL JOURNAL,2014,147(3):0.
APA	Sun, Rongyu,Zhao, Changyin,&Zhang, Xiaoxiang.(2014).IMPROVING THE PRECISION OF ASTROMETRY FOR SPACE DEBRIS.ASTRONOMICAL JOURNAL,147(3),0.
MLA	Sun, Rongyu,et al."IMPROVING THE PRECISION OF ASTROMETRY FOR SPACE DEBRIS".ASTRONOMICAL JOURNAL 147.3(2014):0.