光学技术, 2011, 37 (6): 751, 网络出版: 2011-12-01
光纤激光自混合散斑远程测速研究
Remote velocity measurement based on self-mixing speckle of a fiber laser
光学测量 散斑 远程测速 自适应噪声抵消器 optical measurement speckle remote velocity measurement adaptive noise canceller
摘要
推导出了等效Fabry-Perot腔输出光强的表达式, 结合Labview和Matlab软件编写了自适应噪声抵消器。提出了将自适应噪声抵消器应用到激光散斑信号的去噪处理, 并通过计算散斑频谱能量密度推算出了被测目标的速度。基于Labview软件编写了监控程序, 通过以太网实现了远程控制激光散斑信号对运动物体速度的实时测量。
Abstract
The optical intensity expression of out-put light from equivalent F-P cavity is deduced theoretically. Aaptive noise canceller based on mixed program between Labview and Matlab is designed, and it is introduced to reduce noise of speckle signal. The velocity of target object can be reckoned after calculating the energy density of speckle frequency spectrum. A PC procedure is designed based on Labview, the velocity measurement of moving target can be controlled remotely by Ethernet.
段啊丽, 韩道福, 马力, 戚小平, 郭冬梅. 光纤激光自混合散斑远程测速研究[J]. 光学技术, 2011, 37(6): 751. DUAN Ali, HAN Daofu, MA Li, Qi Xiaoping, Guo Dongmei. Remote velocity measurement based on self-mixing speckle of a fiber laser[J]. Optical Technique, 2011, 37(6): 751.
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