| 利用Fizeau干涉仪进行激光风速测量的原理分析 |
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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.利用Fizeau干涉仪进行激光风速测量的原理分析[J].量子电子学报,2006,23(3):330-334. |
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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： | 1. 苏州大学物理科学与技术学院,江苏,苏州,215006
2. 中国科学院安徽光学精密机械研究所,安徽,合肥,230031 |
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| 基金项目： | 中国科学院"百人计划" |
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| 摘 要： | 导出了激光多普勒雷达基于Fizeau干涉仪及CCD探测器进行测风时,每个CCD元最终接收到信号的一般表达式.对系统的参数做了整体优化,得出一组优化参数.在0～3 km高度,得出系统风速误差小于0.16 m/s.对最终的风速反演分别运用最小二乘拟合法和重心法.分析表明最小二乘拟合法只适用于风速较小的情况.详细分析了运用重心法计算风速必然会引起的误差,并提出一种解决方法.修正后,在±30 m/s风速范围内,该方法产生的误差小于0.25 m/s.
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| 关 键 词： | 大气光学 风速测量 激光雷达 Fizeau干涉仪 气溶胶散射 |
| 文章编号： | 1007-5461（2006）03-0330-05 |
| 收稿时间： | 2005-10-17 |
| 修稿时间： | 2005-11-22 |
Analysis of principle of wind velocity measurement with 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 of principle of wind velocity measurement with Fizeau interferometer[J].Chinese Journal of Quantum Electronics,2006,23(3):330-334. |
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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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| Abstract: | A generalized formulation of signal on each pixel for a wind detection lidar based on Fizeau interferometer and CCD is derived. System parameters is optimized through numerical simulation. System wind error is below 0.16 m/s at the altitude from 0 to 3 kilometers. Least square fitting method and gravity method are used to retrieve wind velocity. The analysis shows that least square fitting method can only be used when the velocity is small. Gravity method is analyzed and the method error is corrected by a new method. After correcting, the error due to the method is below 0.25 m/s at the range of wind velocity from -30 m/s to 30 m/s. |
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| Keywords: | atmospheric optics wind velocity measurement lidar Fizeau interferometer aerosol scattering |
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