The main analytical method of unsteady flow in pipelines includes frequency domain analysis and time domain analysis.
管道中非稳定流动的分析方法主要有频域法和时域法。
Time frequency analysis method is used to analyze the time domain and frequency domain of seismic waves at the same time according to the principle of wavelet transformation.
时频分析方法是利用小波变换原理，从地震波的时间域和频率域同时对其作出分析。
The dissertation also presents the sensitivity of time domain method and frequency domain method to different kinds of error.
分析了时域法、频域法对不同类型误差的敏感程度。
For the convenience of time -domain convolution, the vector fitting method is adopted to approach the characteristic impedance and delay function in complex frequency-domain.
为了便于时域卷积，对不同模量上的特征阻抗和延时函数在复频域采用矢量匹配法进行拟合。
A method, based on analysis of time domain and frequency domain, applied in dynamic balance of hydro-generator rotor is presented.
提出了一种基于时域分析和频域分析的动平衡方法，应用于水轮发电机转子的动平衡。
The authors propose a new method with combination of time domain and frequency domain by using the time-frequency distribution image of the radar signal.
借助于雷达信号的时频分布图像，提出了一种在时频联合域上进行信号识别的新算法。
This article analyzes the plant electrical signal in time domain and frequency domain by using the statistical analysis method.
应用统计分析方法对植物电波信号进行了时域和频域上的分析。
About theoretic calculation for lightning electromagnetic field, two analytical methods are raised, which are dipole method in time domain and time-varying field method in frequency domain.
在雷电电磁场的理论计算方面，提出了两种方法，即时域中的偶极子方法和频域中的时变场方法。
Based on observed signals analysis and comparison in time - domain and frequency -domain, the method of distinguishing interfere signals and abnormal electromagnetic radiation signals is given.
基于对观测信号的时域、频域分析的比较，给出了干扰信号与异常电磁辐射信号的判别方法。
Normalization method of ultrasonic testing signal, the advantages and disadvantages of time domain, frequency domain were discussed.
探讨了超声波检测信号归一化处理的方法，以及时域信号归一化和频域信号归一化的优缺点。
Then, an improved method by combining the time domain method and frequency domain method is provided.
并就其中的时域法和频域法进行了改进，将二者结合起来，使之更有效地对速度进行估计。
This paper makes the comprehensive evaluation of the quality of pile foundation through time domain, frequency domain and entropy spectrum, in which spectrum analysis is a new method.
通过时域、频域、熵谱对桩基质量进行综合评价，熵谱是一种新的谱分析方法，并通过实例分析，说明了在评价桩基质量时熵谱的优点。
Use relative signal processing method to pre-processing data, make time domain and frequency domain analysis, calculate the ride index and comfort, obtain relative results and export reports form.
应用信号处理相关处理方法对数据进行预处理，时域、频域分析，进行平稳性指标、舒适度计算，得出相关处理结果，输出报表。
I filter in time-domain, 2 a simplified algorithm for estimating threshold between interference and others, and a method of attenuating the interference magnitude linearly in frequency-domain.
在频域抗干扰中提出了一种简化的干扰门限估计算法和干扰谱线线性衰减算法，进一步简化了这些算法的实现复杂度。
The result shows that the new method has better effect both in the time domain and in the frequency domain and has higher SNR.
结果证明，新方法的去噪效果在时域和频域上都优于传统方法，而且信噪比更高。
The present invention discloses multistage irides image automatical focusing method combining frequency domain and time domain, method key being the image definition.
本发明公开了一种结合频域和时域的多阶段虹膜图像自动对焦方法。方法的核心在于图像的 清晰度评价。
The experimental results demonstrate that the new method can overcome the spectrum deviation and improve the model precision both in time domain and frequency domain.
应用结果表明：该方法可以克服谱峰漂移现象，提高模型在时域和时频域的建模精度。
The feature extraction method based on efficient points of response curve is studied in time domain and frequency domain.
在时域和频域中给出了基于响应曲线波形有效点的模拟电路故障特征提取方法。
The feature extraction method based on efficient points of response curve is studied in time domain and frequency domain.
在时域和频域中给出了基于响应曲线波形有效点的模拟电路故障特征提取方法。
应用推荐