Image motion compensation of scroll imaging for space camera based on earth ellipsoid

	Image motion compensation of scroll imaging for space camera based on earth ellipsoid
	Wu X.-X.; Liu J.-G.
	2014
发表期刊	Guangxue Jingmi Gongcheng/Optics and Precision Engineering
ISSN	ISBN/1004924X
卷号	22 期号:2 页码:351-359
摘要	The scroll imaging of a space camera can improve its temporal resolution. However, the space camera shows different image motion speeds and drift angles at different positions of field of view in the scroll imaging because of the earth ellipsoid and varied scroll angles. To overcome the problem, the formulas of image motion speeds and drift angles at different positions of field of view were deduced for the scroll imaging based on earth ellipsoid. By taking a high resolution space camera carried on a stereoscopic mapping satellite for an example, the influence of row transfer periods and drift angles adjusting uniformly and individually on Modulation Transfer Function(MTF) was analyzed. Analysis results and on-orbit testing experiments under a constraint of 5% drop for the MTF indicate that the row transfer periods should be adjusted individually if the integral stages are more than 22 in scroll imaging with scroll angle of 10. In comparison to adjusting row transfer periods uniformly, the drop of MTF along the track direction would be cut down from 10.28% to 0.11% by adjusting row transfer periods individually. If integral stages are fixed to 16, the scroll angle by adjusting row transfer periods uniformly should not be over 13.2.
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/181722/44057
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Wu X.-X.,Liu J.-G.. Image motion compensation of scroll imaging for space camera based on earth ellipsoid[J]. Guangxue Jingmi Gongcheng/Optics and Precision Engineering,2014,22(2):351-359.
APA	Wu X.-X.,&Liu J.-G..(2014).Image motion compensation of scroll imaging for space camera based on earth ellipsoid.Guangxue Jingmi Gongcheng/Optics and Precision Engineering,22(2),351-359.
MLA	Wu X.-X.,et al."Image motion compensation of scroll imaging for space camera based on earth ellipsoid".Guangxue Jingmi Gongcheng/Optics and Precision Engineering 22.2(2014):351-359.

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