A frequency spectral analysis was performed and a simulated deterministic expression of train loading was obtained by analysing the vibration of the carriage system.
根据轨道加速度测试数据和分析车辆体系的振动，得到了列车荷载的模拟数定表达式。
This paper first presents an experimental procedure to analyze wall surface heat transfer process and derive wall surface heat transfer coefficient by frequency spectral analysis method.
首次提出了用频率谱分析法分析墙体表面换热过程及推导墙体表面换热系数的实验方法。
With modern spectral estimation algorithm, spectrum analysis on Doppler frequency caused by vehicles radar movement is carried out in DSP chip.
利用现代谱估计的算法，在DSP芯片中对检测车辆雷达运动产生的多普勒频率进行频谱分析。
The frequency response of the transducers is measured experimentally using laser ultrasound and a pulse echo reflecting method. The spectral analysis results are compared and analyzed.
由激光超声方法和自发自收脉冲反射法实验测定了所制作的换能器的频率响应，并比较了频谱分析结果。
The power spectral density function of earthquake motion is usually used for the random response analysis of engineering structures in the frequency domain.
工程结构的随机地震反应分析，常在频域中用到地震动的功率谱密度函数。
The HRV and RDV spectral analysis showed that HF peak was modulated by the frequency of controlled respiration.
发现大白鼠的HRV和RDV的谱分析的峰值频率都受到吸呼频率的调制。
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。
In order to make the track loop into lock quickly, the paper USES FFT spectral analysis to get fine frequency.
为了让跟踪环路快速入锁，这里还采用了FFT谱分析法对频率进行精捕。
According to frequency characteristics of the stator current, which carries the fault information, there are two methods: Wavelet decomposition and spectral analysis.
针对定子电流特征频率所携带的故障信息，目前主要有两类处理方法：小波分解和频谱分析。
The method that relates temporal information to spectral information is called temporal frequency analysis.
把时间域信息和频率域信息联系起来进行分析的方法，称为时频分析法。
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。
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。
The use of Fourier analysis techniques to measure the wavefront power spectral density (PSD) in mid frequency domain is discussed.
波前功率谱密度 （PSD）被用于评价惯性约束聚变激光驱动器光学元件在中频区域的波前误差。
The use of Fourier analysis techniques to measure the wavefront power spectral density (PSD) in mid frequency domain is discussed.
波前功率谱密度 （PSD）被用于评价惯性约束聚变激光驱动器光学元件在中频区域的波前误差。
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