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。
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。
To modify periodogram by moving is a useful and effective method for either real time signal processing or non-stable signal processing.
移动的修正周期图谱估计方法在实时处理和非平稳信号处理的场合中是常用的一种有效方法。
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。
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。
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