Using this method can be based on signal spectral analysis method of fault diagnosis into a planar graph recognition.
利用该方法可以将基于信号频谱分析的故障诊断方法转化为平面图形的识别。
Discrete fast Fourier transform (FFT) has been widely applied to signal spectral analysis and can figure out the entire bandwidth spectrum of a signal.
离散快速傅里叶变换算法在频谱分析中得到了广泛的应用，这种算法得到的计算结果是在整个频段上的频谱信息。
According to the relationship between auto correlation function and its spectral density, a new type of decision tree method based on signal analysis theory is proposed in this paper.
该文根据自相关函数与谱密度函数之间的对应关系，提出了一种新的基于自相关函数的决策树归纳学习算法。
However, presently the main analyzing methods of HRV are spectral analysis, while complexity analysis of HRV is less, and complexity analysis of HRV signal during anaesthesia is much more less.
但目前心率变异性信号的分析法主要是功率谱分析法，复杂性分析法不多，而麻醉期HRV信号的复杂性分析则更少。
The frequency and amplitude and phase of discrete spectral lines can be calculated through two DFT analyses one after another, which is one complex time domain signal analysis virtually.
相继两次DFT分析（实为一次复时域信号分析）可精确确定诸分立谱线的频率、幅度与相位。
Gastric slow waves were recorded by multi-channel physiological signal analytical system. Effects of antagonists of various 5-ht receptors on gastric slow waves were analyzed by spectral analysis.
以多导生理信号分析系统记录胃慢波，以频谱分析法分析不同5 - HT受体拮抗剂对胃慢波的影响。
Traditional speech signal processing is based on FFT power spectral analysis, in noisy condition, the spectrum of noise and speech signal are processed in the same way.
传统语音信号谱特征的提取是基于FFT 的能谱分析方法，在噪音环境情况下，对噪音的频谱成分与语音信号的频谱成分的处理采用“平均主义”的原则。
Based on the groove testing system, we induced the spectral analysis which is the signal analysis tool into evaluating the grooves, and used it as an evaluating standard.
在槽型优选测试系统实验的基础上，我们引入了信号分析工具——功率谱分析，作为评估槽型优劣的一个标准。
The signal, after the Angle modulation, would change in its spectral structure. And the analysis on its frequency spectrum is an important and necessary step for signal processing.
信号经过角度调制后，频谱结构将发生变化，频谱分析是处理信号的重要步骤和必要的保证。
Using the principle of multi-resolution analysis, we decompose a set of original spectral data into the blurring signal part and the sharpening signal part.
利用子波变换的多尺度分析原理，将原始光谱数据分解成集中源信号绝大部分能量的模糊信号和反映源信号变化特性的锐化信号。
It is used for optical signal transmission between the spectral analysis system and the integrating sphere in the color parameter testing. It's size can be customized.
用于光谱分析系统与积分球之间的光信号传输，用于测试光源的颜色参数，尺寸可根据用户要求定制。
The classic spectral analysis method of the past has been replaced by the modern spectral method due to signal missing and the low resolution.
经典谱分析方法具有信号丢失、分辨率低等缺点，现代谱分析方法提高了谱估计的分辨率和真实程度。
Seismic signal is a typical of non-stationary signal. Spectral decomposition in essence is a continuous time-frequency analysis of a seismic trace.
地震反射是典型的非平稳信号，地震谱分解实质上就是连续时频谱分析。
Based on analysis of spectral characteristic of helicopter acoustic signal, a method of extracting harmonic frequencies from the helicopter acoustic signal via ESPRIT is proposed.
在对直升机声信号特征进行分析之后，提出了一种基于谐波恢复的ESPRIT方法来提取直升机声信号谐波频率作为特征用以识别直升机声目标。
Based on analysis of spectral characteristic of helicopter acoustic signal, a method of extracting harmonic frequencies from the helicopter acoustic signal via ESPRIT is proposed.
在对直升机声信号特征进行分析之后，提出了一种基于谐波恢复的ESPRIT方法来提取直升机声信号谐波频率作为特征用以识别直升机声目标。
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