| 接收光路光束发散角对多普勒测风激光雷达测量精度的影响 |
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| 引用本文： | 迟如利,胡明勇,钟志庆,孙东松,周军.接收光路光束发散角对多普勒测风激光雷达测量精度的影响[J].量子电子学报,2006,23(3):325-329. |
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| 作者姓名： | 迟如利 胡明勇 钟志庆 孙东松 周军 |
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| 作者单位： | 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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| 摘 要： | 介绍了已研制的基于Fabry-Perot标准具直接探测多普勒激光雷达的风速测量原理,讨论了接收光路光束发散角对测风激光雷达系统测量精度的影响.数值计算结果表明当接收光路光束发散角小于1 mrad时,由于光束发散引起的多普勒速度测量相对误差可以控制在5%之内,并在实测光路发散角的基础上分析了系统的测量误差,结果显示,在5 km时最大测量速度误差为0.6 m/s.
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| 关 键 词： | 大气光学 激光雷达 多普勒频移 风 Fabry-Perot标准具 光束发散角 |
| 文章编号： | 1007-5461（2006）03-0325-05 |
| 收稿时间： | 2005-03-25 |
| 修稿时间： | 2005-04-12 |
Accuracy affected by the receiveing beam divergence angle in a Doppler wind lidar |
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| CHI Ru-li,HU Ming-yong,ZHONG Zhi-qing,SUN Dong-song,ZHOU Jun.Accuracy affected by the receiveing beam divergence angle in a Doppler wind lidar[J].Chinese Journal of Quantum Electronics,2006,23(3):325-329. |
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| Authors: | CHI Ru-li HU Ming-yong ZHONG Zhi-qing SUN Dong-song ZHOU Jun |
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| Abstract: | The principle of wind measurement for a direct detection Doppler wind lidar developed with a Fabry-Perot etalon is described. The measurement error of the system is affected by the receiving beam divergence angle. The numerical calculation for the Doppler wind lidar system has shown that the percentage error is increased slowly to 5% for the beam divergence less than hnrad. The analysis results for the lneasured beam divergence angle indicate that the error in the velocity dynamic range is less than 0.6 m/s up to 5 km. |
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| Keywords: | atmospheric optics lidar Doppler shift wind Fabry-Perot etalon beam divergence angle |
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