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- The discrete fourier transform (DFT) exists the errors. 摘要离散傅立叶变换(DFT)存在误差。
- The discrete Fourier transform (DFT)and discrete Hartley transform(DHT) can be considered as special cases of DYT. 常用的离散傅里叶变换(DFT)、离散哈特莱变换(DHT)均可视为DYT的特例。
- Convolution of windowing function is traditionally used to explain the Discrete Fourier Transform(DFT) errors. 离散傅里叶变换(DFT)的误差一般是通过窗函数的卷积来解释的.
- The Discrete Fourier Transform (DFT) plays an important role in digital signal processing and many other fields. 离散傅里叶变换 (DFT)在数字信号处理等许多领域中起着重要作用 .
- In this paper, with the Discrete Fourier Transform description of elements group curved surface, two kind of curved surface error are defined. 本文在基本体群形状和工件形状的离散傅立叶变换描述的基础上,定义了不同类型的曲面误差;
- Along with the rapid development of computer software and hardware technology, the discrete fourier transform (DFT) has become one kind of important means of image processing. 随着计算机软件、硬件技术的迅速发展 ,离散傅里叶变换已经成为图像处理的一种重要手段。
- According to the Discrete Fourier Transform, this paper proposes a method of harmonic detection by band filter based on DFT algorithm, which improves the dynamic performance of detection system. 根据带通滤波器的瞬时谐波检测方法,离散傅里叶变换基本思想,提出了运用基于DFT的滤波算法实现带通滤波。
- With reasonable constraint and the assistant of special-designed pilot sequence for each user, the discrete fourier transform (DFT)-based uplink channel estimation algorithm can achieve good estimation accuracy without sacrificing much system capacity. 在合理约束条件以及为每个用户特殊设计的导频序列辅助下,基于离散傅里叶变换(DFT)的上行信道估计算法能够获得较好的估计精度,同时无需牺牲过多的系统容量。
- The fast Fournier transformation resolves big points N into certain dot's DFT combinations . And then the operation work was reduced obviously , thus the computation speed of the Discrete Fourier Transformation (DFT) will be enhanced greatly. 快速傅里叶变换(Fast Fourier Tranformation,FFT)是将一个大点数N的DFT分解为若干小点的DFT的组合,将用运算工作量明显降低,从而大大提高了离散傅里叶变换(DFT)的计算速度。
- Discussion about the Frequency Resolution of the Discrete Fourier Transform 关于离散傅里叶变换频率分辨率的讨论
- Using discrete Fourier transform for interpolation of 3-D MT data. 用傅氏变换实现三维MT数据的插值
- Some interpolated Discrete Fourier Transform (DFT) methods are analyzed. 本文首先讨论并分析了各种插值DFT(离散傅里叶变换)算法,然后提出了一种实正弦信号的快速插值频率估计方法。
- The discrete fourier transform 傅立叶变换
- 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.
- By dissolving Discrete Fourier Transform matrix and combining withthe FFT algorithm,this paper has put out a new method to compute DFT. 本文通过对离散富里叶变换(Discrete Fourier Transform,简记作DFT)矩阵的分解与FFT 算法相结合,提出了一个计算DFT 的新算法。
- This suggests using a resolvent whose roots may be variously described as a discrete Fourier transform or a Hadamard matrix transform of the roots. 就像其它 多项式,有时可能对一个四次方程分解出因式;但更多的时候这样的工作是极困难的,尤其是当根是无理数或复数时。
- A novel design method for the prototype filters of a Near Perfect Reconstruction(NPR) Discrete Fourier Transform(DFT)modulated filter bank is proposed. 提出了一种新的近似完全重构(NPR)离散傅立叶变换(DFT)调制滤波器组的原型滤波器设计方法。
- A new Solid-State Var Compensator controlled by DSP is analyzed in this paper, which is based on the DFT (Discrete Fourier Transform) detection method. 本文论述了一种DSP控制的新型固态无功功率补偿器,它基于离散傅立叶变换(DFT)的谐波检测方法。
- By applying the convolutional theorem of Fourier transform, the discrete iterative equations of electromagnetic field components were presented in the CPML media ... 计算表明,采用CPML吸收边界方法使得截断的外边界处的场的计算误差大大减少。
- A simple and practical instantaneous harmonic current detecting method is introduced,which realizes a special filter based on DFT(Discrete Fourier Transform). 提出了一种用离散傅里叶变换DFT(DiscreteFourierTransform)实现特殊滤波器的瞬时谐波电流的检测方法。