| 多激光束大气风场测量仪及其后向散射信号的光学相关性分析 |
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| 引用本文： | 周立敏,蒋亚东,章正宇,眭晓林.多激光束大气风场测量仪及其后向散射信号的光学相关性分析[J].光电子．激光,2012(2):248-254. |
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| 作者姓名： | 周立敏 蒋亚东 章正宇 眭晓林 |
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| 作者单位： | 电子科技大学光电信息学院电子薄膜与集成器件国家重点实验室;电子科技大学光电信息学院电子薄膜与集成器件国家重点实验室;华北光电技术研究所;华北光电技术研究所 |
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| 基金项目： | 国家自然基金创新群体(61021061);自然基金重点(60736005)资助项目 |
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| 摘 要： | 基于多激光光束测风仪的系统结构和基本工作原理,结合小扰动理论,研究了大气湍流对两个光探测器检测到的后向散射回波的光学相关特性,同时给出了4种基于光学相干法的风速计算公式,包括峰值延时法、斜率法、频率法和Briggs法。通过实地风场检测验证的结果表明,使用峰值延时法、斜率法和频率法计算的风速均具有较高的精度,误差小于5%。
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| 关 键 词： | 实时风场检测 多激光束风场测量系统 光学相关性 稳定性 |
Multi-beam wind measuring system and the optical correlation properties of its back-scattering signals |
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| ZHOU Li-min,JIANG Ya-dong,ZHANG Zheng-yu and SUI Xiao-lin.Multi-beam wind measuring system and the optical correlation properties of its back-scattering signals[J].Journal of Optoelectronics·laser,2012(2):248-254. |
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| Authors: | ZHOU Li-min JIANG Ya-dong ZHANG Zheng-yu and SUI Xiao-lin |
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| Affiliation: | State Key Laboratory of Thin Solid Film and Integrated Devices,School of Optoelectronic Information,University of Electronic Science and Technology of China,Chengdu 610054,China;State Key Laboratory of Thin Solid Film and Integrated Devices,School of Optoelectronic Information,University of Electronic Science and Technology of China,Chengdu 610054,China;North China Research Institute of Electric & Optic,Beijing 100015,China;North China Research Institute of Electric & Optic,Beijing 100015,China |
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| Abstract: | In this work,based on the construction and basic working principle of multi-beam wind measuring system,the optical correlation properties of back-scattering signals measured by two detectors were theoretically analyzed combining with the small distribution theory.Meanwhile,four kinds of optical correlation methods were proposed to calculate the wind speed,ie.,embracing peak-delay method,slope method,frequency method,and Briggs method.According to the real-place verifying experiment,the results show that the peak-delay method,slope method and frequency method have high measurement precision with errors less than 5%. |
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| Keywords: | real-time wind detection multi-beam wind measuring system optical correlation stability |
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