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。
This paper presents calculation of frequency and phase difference of flow signals with spectrum analysis on basics of Fourier transform (DFT).
本文在原有利用双谱对二次相位耦合进行分析的基础上，提出了维谱分析方法。
In this paper, instead of using the bispectrum to detect the quadratic phase coupling, a new method based on -dimension spectrum is developed.
本文叙述了用频谱分析仪测量相位噪声的方法，步骤和应注意的问题。
This paper describes some methods, steps and attentions using a spectrum analyzer in phase noise measurement.
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