| 非柯尔莫哥洛夫湍流对星光到达角起伏影响研究 |
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| 引用本文： | 都文和,周志明,刘道森,蔡成江,堵秀凤,李锐,张光宇,杨玉强. 非柯尔莫哥洛夫湍流对星光到达角起伏影响研究[J]. 红外与激光工程, 2013, 42(10): 2778-2783 |
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| 作者姓名： | 都文和 周志明 刘道森 蔡成江 堵秀凤 李锐 张光宇 杨玉强 |
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| 作者单位： | 1.齐齐哈尔大学 通信与电子工程学院,黑龙江齐齐哈尔 161006; |
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| 基金项目： | 黑龙江省教育厅科学技术研究项目（12511610） |
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| 摘 要： | 基于A. S. Gurvich等人所提出的非柯尔莫哥洛夫湍流功率谱密度模型，推导了弱起伏条件下的到达角起伏方差，得到了一个解析的结果；然后，利用该结果分析了对流层柯尔莫哥洛夫湍流和平流层非柯尔莫哥洛夫湍流对星光到达角起伏的联合影响。结果表明:星光到达角起伏主要是由对流层柯尔莫哥洛夫湍流决定；对于不同的接收孔径，到达角起伏5%~14%是由平流层非柯尔莫哥洛夫湍流引起的。此外，非柯尔莫哥洛夫湍流对到达角起伏还取决于接收孔径、湍流外尺度及非柯尔莫哥洛夫湍流起伏强度。
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| 关 键 词： | 大气光学 非柯尔莫哥洛夫湍流 柯尔莫哥洛夫模型 到达角起伏 |
| 收稿时间： | 2013-02-20 |
Effect of non-Kolmogorov turbulence on fluctuations in angle of arrival of starlight |
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| Affiliation: | 1.Communication and Electronic Engineering Institute,Qiqihar University,Qiqihar 161006,China;2.China United Communications Limited,Yian Branch,Qiqihar 161005,China;3.Institute of Applied Physics,Harbin Science and Engineering University,Harbin 150001,China |
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| Abstract: | Based on a power spectrum of non-Kolmogorov turbulence developed by A S Gurvich et al, the variance of angle-of-arrival (AOA) fluctuations was derived. The concise closed-form expression was obtained and used to analyze the joint influence of Kolmogorov tropospheric turbulence and non-Kolmogorov stratospheric one on the fluctuations in the angle of arrival (AOA) of starlight. It is shown that the AOA fluctuations of starlight were mainly determined by Kolmogorov tropospheric turbulence. And the non-Kolmogorov stratospheric turbulence was responsible for 5-14 percent of the total of AOA fluctuations for different receiver apertures in weak fluctuations regime. In addition, the AOA fluctuations induced by non-Kolmogorov turbulence depended on the receiver aperture and the outer scale and the intensity of non-Kolmogorov turbulence. |
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