摘要
介绍了光反馈自混合干涉系统模型。阐述了基于小波变换的去噪原理。分析了小波多分辨率分解与重构法和非线性阈值去噪法。利用两者相结合的方法有效地消除了光反馈自混合干涉信号中的高频噪声。
The model of optical feedback self-mixing interference (OFSMI) system is introduced in detail. The denoise fundamental on wavelet transform is set forth. Two methods of wavelet denoise are introduced including the wavelet decomposition and reconstruction method and the nonlinear wavelet threshold denoise method. The two methods are used together to denoise the high- frequency noises in OFSMI signal.
出处
《微计算机信息》
北大核心
2008年第10期269-271,共3页
Control & Automation
基金
国家自然基金资助项目(项目名称:基于光反馈干涉效应的多参数纳米级传感测试:理论与应用研究。批准号:60574098)
关键词
半导体激光器
自混合干涉
小波
阈值
semiconductor
self- mixing interferometry
wavelet
threshold
