It is crucial to study the features of the frequency hopping signals in both time and frequency domain in order to detect and trace the FH signals.
对跳频信号的时频域进行分析是研究跳频通信，实现识别、跟踪跳频信号的重要基础。
How to analyse this kind of signals and draw out their features to develop new protection device is an important research domain in the protection technology of power system all the time.
如何对这类信号进行有效分析，提取其特征，开发新型的保护装置，一直是电力系统保护技术中的重要研究领域。
The features of seismic signals are different between time and frequency domains. We can make reservoir prediction better with seismic signals in frequency domain.
地震信号在频率域和时间域表现出不同的特征，利用频率域的地震信号，可以更好地进行储层预测。
Signals of cutting force and vibration are measured with multi-sensor and features in frequency domain and time-frequency domain are extracted by using wavelet package decomposition.
利用多传感器对切削力和振动信号进行监测，通过频率变换提取切削力特征量，采用小波包分解技术提取振动信号特征量。
The features of pulse waveform are extracted using segmented time domain data compression method.
用分段的时域数据压缩法提取了脉冲波形特征。
They show different characteristics in time and frequency domain and share no statistical features.
它们各自在时域或频域中有互不相同的特点，没有一致的统计参数。
Training the multi-fault classifier only needs a small quantity of fault data samples in time domain, and does not need signal preprocessing for extracting signal features.
应用结果表明，不必进行信号预处理以提取特征量，只需要用少量的时域故障数据样本建立故障分类器。
This paper deals with the stability lobes in turning and milling and their features obtained under different structural modal parameters by the time domain simulation method.
文采用时域的数字仿真方法，系统地计算了车削、铣削的稳定图，分析了机床不同结构模态参数匹配下稳定图的特点。
The features of pulse waveform are extracted using segmented time domain data compr...
用分段的时域数据压缩法提取了脉冲波形特征。
The features of pulse waveform are extracted using segmented time domain data compr...
用分段的时域数据压缩法提取了脉冲波形特征。
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