Dändliker R, Zimmermann E, Frosio G
Opt Lett. 1992 May 1;17(9):679-81. doi: 10.1364/ol.17.000679.
We describe a signal-processing method for determining the center position of a white-light fringe signal. This is achieved in two steps. First, the center of gravity of the signal power is calculated to better than half a fringe period. Second, a synchronous sampling with four samples per fringe period is used to calculate the phase of the zero fringe. The theoretical analysis and experimental results show that the proposed signal processing is simple to operate, fast, accurate, and extremely noise resistant.
我们描述了一种用于确定白光条纹信号中心位置的信号处理方法。这分两步实现。首先，计算信号功率的重心，精度优于半个条纹周期。其次，使用每个条纹周期四个样本的同步采样来计算零条纹的相位。理论分析和实验结果表明，所提出的信号处理操作简单、速度快、精度高且抗噪声能力极强。
