| 1.55μm相干激光雷达系统的硬目标速度探测 |
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| 引用本文： | 张飞飞,夏海云,孙东松.1.55μm相干激光雷达系统的硬目标速度探测[J].激光技术,2012,36(5):602-606. |
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| 作者姓名： | 张飞飞 夏海云 孙东松 |
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| 作者单位： | 1.中国科学院, 安徽光学与精密机械研究所, 大气光学中心, 合肥, 230031; |
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| 基金项目： | 国家自然科学基金资助项目(41174130) |
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| 摘 要： | 为了实现激光雷达系统对硬目标的探测,设计了相干探测系统,引入平衡探测器优化本振的大小,并对漫反射硬目标速度进行了探测。结果表明,采用平衡探测器,优化本振的大小,可以有效地提高系统的信噪比,对漫反射硬目标的速率探测平均误差为0.49m/s,测量速率的方差为0.91m/s,实现了系统对漫反射硬目标速度的相干探测。这一结果对于相干测风激光雷达的研制是有帮助的。
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| 关 键 词： | 激光技术 激光雷达 相干探测 硬目标 速度探测 |
| 收稿时间： | 2012/1/12 |
Speed detection of hard targets based on 1.55μm coherent lidar systems |
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| ZHANG Fei-fei
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XIA Hai-yun
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SUN Dong-song.Speed detection of hard targets based on 1.55μm coherent lidar systems[J].Laser Technology,2012,36(5):602-606. |
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| Authors: | ZHANG Fei-fei XIA Hai-yun SUN Dong-song |
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| Affiliation: | 1.Anhui Institute of Optics and Fine Mechanics,Chinese Academy of Science,Hefei 230031,China;2.School of Earth and Space Science,University of Science and Technology of China,Hefei 230026,China) |
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| Abstract: | In order to realize coherent detection of speed of hard targets, a coherent system was designed with a balanced detector introduced to optimize the value of the local oscillator, and the speed of a diffusive hard target was detected. The result demonstrated that the signal to noise ratio of the system was efficiently improved with the balanced detector, the average speed accuracy of the hard target was about 0.49m/s, variance of detection was 0.91m/s, and this system made the coherent detection of the speed of a diffusive hard target. The outcome is useful for research of coherent wind lidar. |
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| Keywords: | laser technique lidar coherent detection hard target speed detection |
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