This paper presents calculation of frequency and phase difference of flow signals with spectrum analysis on basics of Fourier transform (DFT).
本文采用基于傅立叶变换(DFT)的频谱分析方法，计算流量信号的频率和相位差。
The principle of spectrum correction based on difference is studied. A novel method by use of phase phase difference, namely the method of translation of window center is proposed.
研究了基于相位差的频谱校正方法的基本原理，提出一种利用相位差校正的新方法———窗中心平移法。
Considering the spread spectrum orientation systems using difference carrier phase to measure distance, this paper proposed a method for acquiring difference carrier phase by using pilot symbol.
考虑利用载波相位进行测距的扩频无线电导航系统，该文提出了一种基于导引符号的两导航台载波差分相位的提取方法。
Based on the sensing mechanism of Coriolis mass flowmeter and analyzing signal spectrum in actual working, the novel applied method is devised for phase difference detection.
基于科氏质量流量计的工作机理和实际工作情况下的信号频谱分析，提出了切实可行的相位差检测新方法。
After the chatter frequency is idenrified through the power spectrum of the chatter signals dy carrying out FFT, the best phase difference and the related tooth cutting period are calculated.
然后根据颤振系统与切削周期的能量关系，计算出最优相位差及相应的切削周期；
After the chatter frequency is idenrified through the power spectrum of the chatter signals dy carrying out FFT, the best phase difference and the related tooth cutting period are calculated.
然后根据颤振系统与切削周期的能量关系，计算出最优相位差及相应的切削周期；
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