| 大气温度起伏谱的测量 |
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| 引用本文： | 吴晓庆,王英俭,曾宗泳,龚知本.大气温度起伏谱的测量[J].强激光与粒子束,2002,14(2):233-237. |
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| 作者姓名： | 吴晓庆 王英俭 曾宗泳 龚知本 |
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| 作者单位： | 中国科学院 安徽光学精密机械研究所， 国家863计划大气光学重点实验室， 安徽 合肥 230031 |
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| 基金项目： | 国家 8 6 3激光技术领域资助课题 ( 86 3-4 10 -9.3) |
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| 摘 要： | 用直径1μm和10μm金属丝分别测量了大气温度起伏功率谱，提出了测量湍流外尺度的方法。实测结果表明：在复杂的光传输路径上至少有50%的温度谱不符合Kolmogorov的－5/3定律；用直径1μm丝进行单点测量的C2n和直径10μm丝进行双点测量的C2n较为一致；80%的外尺度不超过7m。
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| 关 键 词： | 温度起伏谱 －5/3定律 外尺度 |
| 文章编号： | 1001-4322(2002)02-0233-05 |
| 收稿时间： | 2001/7/3 |
| 修稿时间： | 2001年7月3日 |
Measurements of the spectrum of atmospheric temperature fluctuations |
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| WU Xiao qing,WANG Ying jian,ZENG Zong yong,GONG Zhi ben.Measurements of the spectrum of atmospheric temperature fluctuations[J].High Power Laser and Particle Beams,2002,14(2):233-237. |
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| Authors: | WU Xiao qing WANG Ying jian ZENG Zong yong GONG Zhi ben |
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| Institution: | Anhui Institute of Optical and Fine Mechanics, the Chinese Academy of Sciences,P.O.Box 1125， Hefei 230031, China |
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| Abstract: | The spectrum of temperature fluctuations have been measured by 1μm and 10μm diameter wires.A method for measuring outer scale is presented.The results of measurement show that at least 50% temperature spectra deviate from kolmogorov's "-5/3 low" over complex terrain. The results measured by a single sensor and a couple of sensors respectively agree well with each other. 80% of the outer scales are less than 7 meters. |
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| Keywords: | power spectrum of temperature fluctuation -5/3 power law inner and outer scale |
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