Turbulent phase screens generated by covariance approach and their application in numerical simulation of atmospheric propagation of laser beam - art. no. 634628

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	Turbulent phase screens generated by covariance approach and their application in numerical simulation of atmospheric propagation of laser beam - art. no. 634628
	Yan HX(严海星); Chen S(陈涉); Li SS; 严海星 (reprint author), Chinese Acad Sci, Inst Mech, Beijing 100080, Peoples R China.
会议录名称	XVI International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, Pts 1 and 2
	2007
会议名称	16th International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers
会议日期	SEP 04-08, 2006
会议地点	Gmunden, AUSTRIA
摘要	Multiple phase screen (PS) method is typically used in numerical simulations of light propagation through a turbulent atmosphere and an adaptive optics (AO) system for phase compensation. One of key problems in it is generation of turbulent PS for describing the turbulent atmosphere. The covariance approach is a relatively new approach for generating PS. In this paper, the covariance approach is used to generate turbulent PS and a preliminary numerical simulation investigation on this approach and its generated PS is carried out. We propose to use three methods to evaluate the generated PS in a combining way. It is found that a comparison of the phase structure function of generated PS with the theoretical one is not enough and often inefficient. By contrast, a comparison of open loop and close loop laser propagation results by using generated PS can give a deeper insight. Open loop and close loop results by using PS generated by covariance approach are obtained and compared with those by using PS generated by spectral approach for the first time. It is shown that PS generated by covariance approach includes more abundant frequency components and these components have obvious influences on light propagation through a turbulent media.
WOS记录号	WOS:000248189400079
ISBN号	978-0-8194-6430-9
URL	查看原文
收录类别	CPCI-S ; EI
语种	英语
引用统计
文献类型	会议论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/58898
专题	力学所知识产出(1956-2008)
通讯作者	严海星 (reprint author), Chinese Acad Sci, Inst Mech, Beijing 100080, Peoples R China.
推荐引用方式 GB/T 7714	Yan HX,Chen S,Li SS,et al. Turbulent phase screens generated by covariance approach and their application in numerical simulation of atmospheric propagation of laser beam - art. no. 634628[C]XVI International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, Pts 1 and 2,2007.

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