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| 对基于Fizeau干涉仪的测风激光雷达的研究 | |
| 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.对基于Fizeau干涉仪的测风激光雷达的研究[J].红外与激光工程,2006,35(6):691-695. |
| 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 |
| 作者单位： | 1. 苏州大学,物理科学与技术学院,江苏,苏州,215006;中国科学院安徽光学精密机械研究所,安徽,合肥,230031 2. 中国科学院安徽光学精密机械研究所,安徽,合肥,230031 3. 苏州大学,物理科学与技术学院,江苏,苏州,215006 |
| 基金项目： | 中国科学院"百人计划";中国科学院知识创新工程项目 |
| 摘 要： | 介绍了基于Fizeau干涉仪测风激光雷达的系统结构。在已有的系统参数下，对探测器测量的频率范围和Fizeau楔角作了优化，得出的系统误差在3 km处小于0.17 m/s。讨论了不同的数据反演方法。采用Voigt拟合法对用Monte?蛳Carlo方法模拟的信号进行了多次处理，反演出的风速和实际值相差很小，标准偏差和用最小二乘拟合方法的系统误差公式值相符。表明用Voigt拟合方法反演风速是可行的，尤其在大风速情况下，其优势明显。在3 km处，当K=0.1时，探测器的盲区存在将产生约0.01 m/s的测量误差。 |
| 关 键 词： | Fizeau干涉仪 风速 激光雷达 米散射 |
| 文章编号： | 1007-2276(2006)06-0691-05 |
| 收稿时间： | 2006-01-15 |
| 修稿时间： | 2006-02-10 |
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.Wind lidar based on Fizeau interferometer[J].Infrared and Laser Engineering,2006,35(6):691-695. | |
| Authors: | SHEN Fa-hua SUN Dong-song CHEN Min XIA Hai-yun DONG Jing-jing WANG Bang-xin ZHONG Zhi-qing ZHOU Xiao-lin |
| Affiliation: | 1.Department of Physics ,Soochow University, Suzhou 215006,China; 2.Anhui Institude of Optics and Fine Mechanics,Chinese Academy of Sciences ,Hefei 230031,China |
| Abstract: | The system of wind lidar based on Fizeau interferometer is introduced. Frequency range of detector measuring and Fizeau wedge angle are optimized. At altitude of 3 km, the system error of radial wind is below 0.17 m/s. Several data processing methods are discussed. Voigt fitting method is used to deal with signal perturbed with random noise simulated by Mont-Carlo technique .The calculated error is small and the standard deviation agrees well with the value calculated by the formula of system error for least square fitting. The result shows that the use of Voigt fitting method to retrieve wind is feasible, its advantage is obvious especially when wind velocity is large. When K=0.1, the wind error due to dead space of detector is about 0.01 m/s at altitude of 3 km. |
| Keywords: | Fizeau intefferometer Wind velocity Lidar Mie scattering |
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