| 二维计数跟踪型激光多普勒测速研究 |
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| 引用本文： | 刘昌文,刘杰,孙其超,王仕康.二维计数跟踪型激光多普勒测速研究[J].中国激光,1999,26(12):1118-1122. |
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| 作者姓名： | 刘昌文 刘杰 孙其超 王仕康 |
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| 作者单位： | 天津大学机械工程学院汽车工程系,天津,300072 |
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| 基金项目： | 天津市青年科学基金!(963701211) |
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| 摘 要： | 二维计数跟踪型激光多普勒测速系统利用两个计数跟踪光电混合反馈环路来分离并测量速度的二维分量。采用计数跟踪方法后,光电信号的带宽被压缩了至少一个数量级,使得该系统不仅工作稳定可靠,而且结构简单、成本低廉。详细讨论该系统的工作原理、构成,并给出实验研究结果。
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| 关 键 词： | 激光多普勒测速 二维激光测速 计数型信号处理 频率跟踪 计数跟踪技术 |
| 收稿时间： | 1999/5/31 |
Investigation on Two-dimensional Counting and Tracking Laser Doppler Anemometry |
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| Liu Changwen,Liu Jie,Sun Qichao,Wang Shikang.Investigation on Two-dimensional Counting and Tracking Laser Doppler Anemometry[J].Chinese Journal of Lasers,1999,26(12):1118-1122. |
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| Authors: | Liu Changwen Liu Jie Sun Qichao Wang Shikang |
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| Abstract: | In this paper, a newly developed two dimensional Laser Doppler anemometry (2D LDA) is reported, in which two components of the velocity are distinguished and measured by two closed optic electro hybrid feedback loops containing the counting and tracking technique. As the bandwidth of photocurrent is compressed more than one order, the new 2D LDA system is simplified and lower cost besides the stable and reliable operation. Experimental study has been carried out to confirm the working principle of the system. |
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| Keywords: | laser Doppler anemometry two dimensional laser Doppler anemometry burst counting signal processor frequency tracking counting tracking technique |
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