IMECH-IR  > 力学所知识产出(1956-2008)
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.
Source PublicationXVI International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, Pts 1 and 2
2007
Conference Name16th International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers
Conference DateSEP 04-08, 2006
Conference PlaceGmunden, AUSTRIA
AbstractMultiple 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 IDWOS:000248189400079
ISBN978-0-8194-6430-9
URL查看原文
Indexed ByCPCI-S ; EI
Language英语
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Document Type会议论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/58898
Collection力学所知识产出(1956-2008)
Corresponding Author严海星 (reprint author), Chinese Acad Sci, Inst Mech, Beijing 100080, Peoples R China.
Recommended Citation
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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