In the period analysis of hydrological time series, there are five methods: simple partial wave method, Fourier analysis method, power spectrum analysis method, maximum entropy spectral analysis method and wavelet analysis method.
水文序列中的周期分析方法主要有五种，分别是：简单分波法、傅立叶分析法、功率谱分析法、最大熵谱分析法以及小波分析法。
参考来源 - 水文时间序列周期分析方法的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Power Spectrum Analysis is a common method for precise detection in mechanical fault diagnosis.
功率谱分析是机械故障诊断技术中精密诊断的常用方法。
Based on the analysis, a new method to detect carrier frequency of FSK signal named time-domain joint and modern power spectrum estimation is put forward.
对电力远动通道FSK信号进行了时域和频域分析，在此基础上提出了一种新的FSK信号载波频率测量方法—时域拼接结合现代功率谱估计的方法。
It is an effective and reliable method to analyze signals and diagnose gearbox by Hilbert power spectrum analysis.
作包络功率谱分析，能有效地对齿轮箱故障进行诊断分析。
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