| 影响Fizeau干涉仪测风激光雷达测量精度因素分析 |
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| 引用本文： | 沈法华,孙东松,陈敏,夏海云,董晶晶,王邦新,钟志庆,周小林.影响Fizeau干涉仪测风激光雷达测量精度因素分析[J].大气与环境光学学报,2006(4). |
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| 作者姓名： | 沈法华 孙东松 陈敏 夏海云 董晶晶 王邦新 钟志庆 周小林 |
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| 作者单位： | 苏州大学物理科学与技术学院 中国科学院安徽光学精密机械研究所 中国科学院安徽光学精密机械研究所 江苏 苏州 安徽 合肥 江苏 苏州 |
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| 基金项目： | 中国科学院百人计划资助，中国科学院知识创新工程资助项目(CX0201) |
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| 摘 要： | 基于Fizeau干涉仪测风激光雷达是利用线列探测器来测量Fizeau条纹的中心移动,以确定由于多普勒效应产生的激光频率变化的。系统噪声及激光本身的发射频率的线宽、光束发散角、发射光及回波信号光在通过干涉仪之前的光强不均匀性,以及探测器的内部结构等因素都会影响到风速的测量精度。本文对这些因素做了较为详细的分析,为提高系统测量精度提供了参考。
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| 关 键 词： | 精度 均匀性 盲区 发散角 带宽 |
Analysis on the Factors Influencing Measure Precision of Wind Lidar Based on Fizeau Interferometer |
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| SHEN Fa-hua,SUN Dong-song,CHEN Min,XIA Hai-yun,DONG Jing-jing,WANG Bang-xin,ZHONG Zhi-qing,ZHOU Xiao-lin.Analysis on the Factors Influencing Measure Precision of Wind Lidar Based on Fizeau Interferometer[J].Journal of Atmospheric and Environmental Optics,2006(4). |
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| Authors: | SHEN Fa-hua SUN Dong-song CHEN Min XIA Hai-yun DONG Jing-jing WANG Bang-xin ZHONG Zhi-qing ZHOU Xiao-lin |
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| Affiliation: | SHEN Fa-hua,SUN Dong-song,CHEN Min,XIA Hai-yun,DONG Jing-jing,WANG Bang-xin,ZHONG Zhi-qing,ZHOU Xiao-lin Department of Physics,Scoochow University,Suzhou 215006,China, Anhui Institute of Optics and Fine Mechanics,Chinese Academy of Science,Heifei 230031,China |
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| Abstract: | Wind lidar based on Fizeau interferometer detects displacement of fringes of the Fizeau due to Doppler shift by a linear detector. The measurement precision may be influenced by the system noise, the linewidth of the laser, the divergence angle of the beam, the spatial variations in intensity of the incident and scattering light before they come to the interferometer and the inner structure of the detector. These factors are analyzed to provide suggestion on how to improve the measure precision. |
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| Keywords: | precision homogeneity dead space divergence angle linewidth |
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