动态干涉条纹相位提取的抗干扰算法

An Anti-Jamming Algorithm of Phase Extracting for Dynamic Interference Fringes

为减小在动态干涉条纹的相位提取中噪声带来的计数误差,研究了在希尔伯特变换相位提取的基础上,利用反正切相位跳变特性,通过软件实现可逆计数的抗干扰算法。通过模拟实验对算法的抗干扰性能进行了验证,实验结果表明:所提出的相位提取算法具有较强的抗干扰性能,在信噪比为11时,算法仍然能得到正确的结果。

In order to reduce the error counts with high noise in the phase extracting of dynamic interference fringes, based on the phase extracting method with Hilbert transform, an anti-jamming algorithm with reversible counting using the arctan gent phase characteristic was presented. The experiment results show that the algorithm can greatly increase the anti-jamming performance of phase extracting, there is an accurate result when the signal to noise ratio equals 11.