| 基于变步长自适应滤波器在激光多普勒测量中的去噪研究 |
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| 引用本文： | 李炳虎,宋元胜.基于变步长自适应滤波器在激光多普勒测量中的去噪研究[J].光学与光电技术,2006,4(1):62-64. |
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| 作者姓名： | 李炳虎 宋元胜 |
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| 作者单位： | 武汉大学电气工程学院,武汉,430072 |
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| 摘 要： | 提出了一种自适应滤波算法应用于激光多普勒测量中的去噪方法，根据变步长自适应滤波算法的步长调整原则,分析了变步长最小均方算法的步长与误差关系曲线特点.研究表明,通过变步长自适应滤算法可有效地消除激光多普勒测量中由于声光调制、电光调制等引入的多频率噪音干扰.该算法简单、收敛性能强,仿真验证了该算法的优越性.
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| 关 键 词： | 激光多普勒测速 变步长 信号处理 自适应滤波算法 |
| 文章编号： | 1672-3392（2006）01-0062-03 |
| 收稿时间： | 2005-08-11 |
| 修稿时间： | 2005-10-18 |
Denoising Research on a Variable Step Size LMS Adaptive Filter of Laser Doppler Measurement |
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| LI Bing-hu,SONG Yuan-sheng.Denoising Research on a Variable Step Size LMS Adaptive Filter of Laser Doppler Measurement[J].optics&optoelectronic technology,2006,4(1):62-64. |
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| Authors: | LI Bing-hu SONG Yuan-sheng |
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| Abstract: | An adaptive filter algorithm applied to laser Doppler measurement's denoising is proposed. According to the step size adjustment principle of variable step size LMS adaptive filter, the relationship curve between variable step size and error is analyzed. It shows that the variable step size adaptive filter algorithm can effectively eliminate the noise disturbance from acoustic optic modulation and electric optic modulation. The simulation results prove that the algorithm is simple and convergence. |
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| Keywords: | laser Doppler velocimetry variable step-size digital signal processing adaptive filtering algorithm |
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