The Periodogram的意思|示意

The power spectral density of gearbox vibration signals is estimated by the periodogram from which original feature sets are derived.

为解决该问题，提出了利用频域特征和遗传编程对齿轮箱盖多类状态振动信号进行特征提取的方法。

The major periods in first four principal components series are also revealed by using the periodogram and the maximum entropy method.

在这四个主成分序列中的决定性周期用周期图和最大熵方法加以揭露。

A simple algorithm for frequency offset estimation is proposed, which estimates the frequency offset with the periodogram and the correlation function of the observation samples.

提出了一种频差估计的新算法，该算法结合观测序列的周期图和自相关函数进行频率估值。

The power spectrum of the noise and signal are estimated by the average smooth periodogram method.

用平均平滑周期图法分别估算出信号与噪声的功率谱密度函数。

This paper presents a method with mixed spectra for analyzing rotational accuracy of spindles, making use of the modified periodogram test combined with dynamic data system modeling.

本文采用动态数据系统建模分析法与改进的周期图检验法相结合，对主轴回转精度进行混合谱分析。

If sampling length doesn't adapt rotative velocity, the results of calculation by FFT or periodogram analysis will lead to pseudo-periods, which distorts the principal value function terms.

若采样长度与回转速度不吻合，将会出现伪周期，使主值函数项中提取周期成分后的信号失实。