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Modified moment-matching method for estimating pointing parameters in the presence of atmospheric turbulence
Zhang Yu1,2,3; Li Xinyang1,2; Rao Changhui1,2
Source PublicationAPPLIED OPTICS
Volume51Issue:10Pages:C144-C151
2012-04-01
Language英语
Indexed BySCI
WOS IDWOS:000302859900025
SubtypeArticle
AbstractAn accurate pointing system is required in free-space optical (FSO) communication links. Low energy-transmission efficiency caused by pointing errors would decline the communication system's performance. The statistics of the detected signal or return signal values could be used to estimate the pointing parameters, whereas atmospheric turbulence brings in serious challenges. A modified moment-matching estimation method is presented in this paper. The irradiance fluctuation caused by the atmospheric turbulence is considered, and the probability density function (PDF) in a weak turbulence condition is assumed to be lognormal. This modified approach is evaluated with wave-propagation simulation data and shows significant improvement over the conventional approach. The estimation accuracy and the properties of this new approach are also discussed. Although our method is based on lognormal irradiance PDF under a weak turbulence condition, the irradiance PDF would tend to be lognormal with aperture averaging effect under moderate to strong turbulence, and the ideas can be extended with appropriate PDF models to satisfy different conditions. (C) 2012 Optical Society of America
WOS KeywordPHYSICAL CROSS-SECTION ; PROBABILITY DENSITY ; LASER ; SYSTEM ; PROPAGATION ; SATELLITES ; MODEL
WOS Research AreaOptics
WOS SubjectOptics
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Document Type期刊论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/2406
Collection光电技术研究所被WoS收录文章
Affiliation1.Chinese Acad Sci, Key Lab Adapt Opt, Chengdu 610209, Peoples R China
2.Chinese Acad Sci, Inst Opt & Elect, Chengdu 610209, Peoples R China
3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Zhang Yu,Li Xinyang,Rao Changhui. Modified moment-matching method for estimating pointing parameters in the presence of atmospheric turbulence[J]. APPLIED OPTICS,2012,51(10):C144-C151.
APA Zhang Yu,Li Xinyang,&Rao Changhui.(2012).Modified moment-matching method for estimating pointing parameters in the presence of atmospheric turbulence.APPLIED OPTICS,51(10),C144-C151.
MLA Zhang Yu,et al."Modified moment-matching method for estimating pointing parameters in the presence of atmospheric turbulence".APPLIED OPTICS 51.10(2012):C144-C151.
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