Fourier的例句大全

Using Fourier pseudospectral method in space direction, and mid-point Euler method in time direction to discrete nonlinear "good" Boussinesq equation, a multi-symplectic Fourier pseudospectral scheme was constructed.

在空间方向用Fourier拟谱方法离散非线性goodBoussinesq方程，然后在时间方向用中点辛格式对半离散方程进行数值求解，得到了非线性goodBoussinesq方程的多辛Fourier拟谱格式。

The determination of time discrimination and frequency discrimination and the selection of a window function in the short-term Fourier transform ( STFT) were discussed to analyze the vibrational signals from a high-pressure hydraulic pump unit.

对水泵机组振动信号分析中短时傅立叶变换的时间分辨率和频率分辨率的设定、窗函数的选取进行了研究。

Then considering configuration of the time domain IP measure and the Fourier coefficient of the excitation pulse, calculate various response of the frequence domain.

然后结合时间域激电测量方案，及激发脉冲的频谱系数，计算频率域的各种响应参数，如频散率、频导电率、频激电率。

The application of integral character of time domain on Fourier conversion

傅氏变换中的时域积分特性应用

This paper discusses the application methods on solving frequency function and sets examples, In the two integral characters of time domain on Fourier conversion.

该文讨论傅氏变换中的二个时域积分特性，在求解频谱函数中的应用方法，并举例予以说明。

Analysis in time domain based on Jones matrix theory is given for the synthesizer. The algorithm comparing of Fourier series coefficients in positive-direction is used to design the synthesizer producing other types of periodical waveforms in time domain.

利用琼斯理论对该综合器进行了理论分析，根据扩展傅里叶级数系数正向对比法，实现了其他类型的周期性时域波形。

This paper describes a new method which uses IDFT ( Inverse Discrete Fourier Transform) technique to do time domain near field measurement for antenna.

本文提出了一种利用离散付立叶反变换（IDFT）技术完成天线的时域近场测量的方法。

Get the amplitude frequency characteristics of impulse response and aeroelastic coupling response by discrete Fourier transform of time domain response, then get the structural damping of blade and tower and the aeroelastic damping of blade based on half-power bandwidth method.

通过对时域响应进行离散傅里叶变换，得出脉冲响应与气弹耦合响应的幅频特性，然后基于半功率带宽法得出叶片与塔架的结构阻尼及叶片的气弹阻尼。

Data of complete time domain waveform is also needed in order to calculate accurate S-parameters of frequency domain via fast Fourier transform ( FFT).

而要通过FFT获得准确的频域散射参数，又必须得到完整的时域波形数据。

Although the filtering method in frequency domain can solve the time variant filtering problem based on Fourier transform, the method may appear a false anomaly in conjunct part between windows.

频率域滤波方法虽然可解决时变滤波问题，但这种方法是基于傅里叶变换，在窗口与窗口之间的接合部位会出现假异常。

Fractional Fourier transform and time-frequency filtering

分数阶Fourier变换与时频滤波

This paper proposes a scheme for temporary time locking by using FFT ( fast fourier transformer) in OFDM ( orthogonal frequency division multiplexing). The OFDM has a good BER in multipath.

提出了OFDM（正交频分复用）利用FFT（傅里叶变换）实时同步方式的方案，在多径环境下具有有良好的特性。

Computer stereo vision technique can be mainly described as two images combination, Moire contouring, Fourier transform profilometry, phase measuring profilometry, active triangulation, range form focus, time of flight and spectrum project method.

计算机立体视觉技术主要有双像合成法、莫尔条纹法、傅立叶变换轮廓法、位相测量法、三角测距法、聚焦法、飞行时间法和光谱法。

The Fourier analysis is carried out in a sliding coordinate system, eliminating the accumulated error caused by the difference between the internally generated time reference and the line cycle when performing discretization on Fourier algorithm.

另外，为了消除在对Fourier算法离散化时由于内部时钟与电网周期不完全同步引起的积累误差，采用了在滑动时间坐标系中进行Fourier分析的方法。

Short-time Fourier transform can not take care of time resolution and frequency resolution simultaneously.

短时傅立叶变换不能同时兼顾时间分辨率和频率分辨率。

Fourier transform infrared time resolved spectroscopy

付里叶变换红外时间分辨光谱学

According to time domain sample theory and frequency domain sample theory, the figure changes from time domain to frequency domain were used to illustrate the process of DFT ( Discrete Fourier Transform) and its physical meaning.

根据时域和频域抽样定理，从时域和频域的图形变换角度证明了DFT物理意义，并结合图形推导了其定义式。

In this paper, the time domain solution is obtained by Fourier transform of frequency domain results.

本文借用频率域方法，求得浮体运动附加质量和阻尼系数关于频率ω从0到∞的变化特性，通过Fourier变换将频域解转化为时域解。

In this paper, theory and encoding display method of Fourier holo-spectrum are presented, and a display system is developed.

本文提出Fourier全息谱的理论及编码显示方法，并给出实际显示系统。

Its time-domain analysis ability that Fourier transform be not was especially suitable for time series processing.

它拥有Fourier变换所不具备的时域分析能力，特别适用于对时间序列的处理。