The processing result notes that the method of timefrequencyanalysis may improve stability and liability of extracting Rayleigh wave velocity.
处理结果表明,应用时频分析方法可以提高瑞雷波速提取的稳定性和可靠性。
2
Then the time domain analysis methods and frequency domain analysis methods which are frequently used for fault diagnosis have been discussed.
其次论述了常用的故障诊断方法,即时域分析方法和频域分析方法。
3
Joint timeFrequencyAnalysis (JTFA) describes and determines how the frequencies of non stationary signals change over time. It offers a better understanding of nature of the signal.