基于经验模态分解的激光干涉信号处理  

Laser interferometer signal processing based on empirical mode decomposition

作　　者：蒲亮[1] 叶玉堂[1] 吴云峰[1] 王昱琳[1] 刘莉[1] 

机构地区：[1]电子科技大学光电信息学院现代光电测控及仪器实验室,成都610054

出　　处：《激光技术》2011年第3期299-301,311,共4页Laser Technology

摘　　要：为了去除激光干涉测速系统提取的小波脊的大量高频噪声,提高系统测量精度,采用一种基于经验模态分解的小波脊优化的方法,对高频噪声强度进行了很好的抑制,测量误差为原来未优化误差的42.3%,较大幅度提高了激光干涉测速系统的测量精度。结果表明,该方法对经过时频分析的信号去噪有重要的实用价值。In order to suppress the high-frequency noise contained in the wavelet ridge obtained from the laser interference velocity measurement system and improve the system accuracy, a method based on empirical mode decomposition was proposed . Theoretical analysis and experimental results show that this method can significantly suppress the high-frequency noise. The measurement error is 42.3% of the original one before optimization. This method improves system for any reflector and it is applicable in signal

关 键 词：傅里叶光学与光信号处理 小波脊优化 经验模态分解 全光纤位移干涉系统 连续小波变换 

分 类 号：O438.2[机械工程—光学工程]