基于贝叶斯频谱估计的相位差测量及实现

Implementation of measuring the difference of phase based on Bayesian estimation

针对传统的相位测量方法测量误差大,又受波形失真、频率以及噪声等条件影响的缺点,提出了基于贝叶斯频谱估计理论的相位差测量方案,有效地避免了上述问题。仿真结果证明,该方法检测精度高,可以检测的相位差值达0．0004°,具有一定的实用性和推广价值。

This paper presents the scheme of measuring phase difference based on the rational of Bayesian spectrum estimation. Compared with the traditional method, this method shows the advantage of a small error in measuring phase difference and eliminates the influence of wave distortion, frequency variation,noise and so on. The application shows that this method runs accurately, can measure phase difference up to 0. 00040, it proved that this method is practical and worthy of using abroad.