基于双时域傅里叶变换的相位测量算法

J4 ›› 2016, Vol. 33 ›› Issue (4): 399-404.

基于双时域傅里叶变换的相位测量算法

刘胜德吕晓旭钟丽云黄伟楠王妍陈玉冰

华南师范大学信息光电子科技学院，广东广州 510006

收稿日期:2016-04-07 修回日期:2016-05-11 出版日期:2016-07-28 发布日期:2016-07-28

Phase measurement algorithm based on double time domain Fourier transform

Liu Shengde, Lv Xiaoxu, Zhong Liyun, Huang Weinan, Wang Yan, Chen Yubing

Received:2016-04-07 Revised:2016-05-11 Published:2016-07-28 Online:2016-07-28

摘要/Abstract

摘要： 提出了一种双时域傅里叶变换相位提取算法。通过把一段具有两个干涉周期的时域光强信号分成多段一个周期的子段，通过两次使用傅里叶变换把相移器引入的相移频率和其他干扰频率分离出来，模拟和实验结果都证明了该算法在不提高系统复杂性和大幅度减少数据获取量的前提下显著提高了系统抗干扰能力，该方法从采集到待测物体相位的提取，完全无须人工干预，有利于实现自动化。

关键词: 随机噪声

Abstract: A kind of double time domain Fourier transform is proposed. By cuting the time varied intensity of two phase shift cycle into many pieces of time varied intensity with one phase shift cycle, then separats phase shift frequency and disturbance frequency by performing Forier transform two times. Both numerical simulation and experiment result s show this algorithm simplifies the phase shifting system, deduces the data acquision and improved the ability of noise resistence, it needs no manual intervention while performing this algorithm and has the property of automation.

刘胜德吕晓旭钟丽云黄伟楠王妍陈玉冰. 基于双时域傅里叶变换的相位测量算法[J]. J4, 2016, 33(4): 399-404.

Liu Shengde, Lv Xiaoxu, Zhong Liyun, Huang Weinan, Wang Yan, Chen Yubing. Phase measurement algorithm based on double time domain Fourier transform[J]. J4, 2016, 33(4): 399-404.