小波阈值法在光干涉信号除噪中的应用  

Applications of wavelet threshold method in denoising optical interferometer signals

作　　者：郭常盈[1] 张芳[1] 禹延光[2] 

机构地区：[1]南阳理工学院计算机科学与技术系,河南南阳473004 [2]郑州大学信息工程学院,河南郑州450052

出　　处：《光通信研究》2009年第2期42-44,共3页Study on Optical Communications

基　　金：国家自然科学基金资助项目(60574098)

摘　　要：通过对传统数字滤波和Birge-Massart小波阈值法的比较,对光反馈自混合干涉信号进行了去噪研究。构建了光反馈自混合干涉理论模型,通过对其仿真波形和实测波形的处理,比较了加权平滑滤波、有限长单位冲激响应滤波器和小波阈值法的去噪效果,结果表明,小波阈值去噪方法明显优于另外两种传统的滤波方法,具有更好的去噪效果。The denoising of optical feedback self-mixing interferometer signals is studied by comparing the traditional digital filter method and Birge-Massart threshold wavelet method. The theoretical model of optical feedback self-mixing interferometer system is constructed and the denoising effects of the weighted smooth filtering, finite long-unit impulse response filter and the threshold wavelet method are compared by processing the simulated and measured waveforms. The results prove that the threshold wavelet method is better than the other two traditional filtering methods.

关 键 词：光反馈自混合干涉 信号去噪 小波变换 Birge—Massart阈值法 

分 类 号：TN248.4[电子电信—物理电子学]