... 多重相干函数 multiple coherence function 信号相干函数 Signal Coherence Function 高次相干函数 higherorder coherence function ; order coherence function ...
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信号检测；周期性信号；信号相干函数；统计理论；周期图。
Signal detection; Periodic signal; signal coherence function; Statistical theory; Periodogram.
分析了信号的频谱及相干函数。
The frequency spectrum and the coherent function of the signal were analyzed.
应用振动、噪声信号频谱分析和相干函数分析技术，从理论上说明变速箱故障诊断的依据。
The theory of coherence function and spectrum of vibration and noise signals is applied in gearbox noise analysis in the paper. The basis of fault diagnosis of gearbox is theoretically introduced.
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