Fourier

Some applications of the fast Fourier transform to the polynomial calculation.

多项式计算当中快速傅立叶变换的应用.

The experimental conclusion is indicated rather strikingly in the Fourier plot of Fig. 223.

实验的结论非常明显地显现在图223的傅里叶曲线上.

The general fact was thrust into the light by Fourier's work.

这个普遍性事实是由傅立叶的工作揭露出来的.

One-dimensional vector of discrete short-time Fourier transform function.

一 维 向量的离散 短时 Fourier变换函数.

Fourier inverse transform IFFT, to restore the signal from the frequency domain.

用傅里叶反变换IFFT, 从频域恢复信号.

Further , by double FOURIER series expansion and intricate derivation, strict output analytic solution is acquired.

针对模型, 通过双FOURIER级数展开和繁琐的数学推导, 求得了输出电压的严格解析表达式.

And by means of Fourier infrared spectrometer, the glass transition temperature of the tester and transmission electron microscopy on the structure of polymer was characterized.

并借助傅立叶红外光谱仪、玻璃化温度测试仪、透射电镜等对聚合物的结构进行了表征。

Fourier's analysis method was further used to discover frequency multiplication weak signal.

结合傅里叶分析方法进一步找出风机存在的倍频微弱信号.

Deriving cloud motion vectors from high temporal resolution images based on Fourier phase analysis technique

基于傅立叶相位分析的卫星云图导风技术

For anisotropic materials Fourier's law must be formulated in a more generalized form.

对于各向异性的物质来说,傅里叶定律必须改写成具有更普遍意义的形式.

Most magnetotelluric data processing methods make the Fourier transform of a segment record to get a power spectrum then to solve for tensor impedance element.

大地电磁资料处理方法大多数都是对一段记录做傅氏变换，构成功率谱后再求张量阻抗元素。

The extension of real-valued order Fourier transforms to complex regime is natural.

将分数傅立叶变换的阶数由实数域扩展到复数域是非常自然的.

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 objects 3-D profile are reconstructed by using of the Fourier transform.

双光纤莫尔干涉条纹与傅里叶变换法相结合可以测量物体的三维轮廓.

Study of Focal Length Measurement of Fourier Lens With Spectral Analysis Method

频谱分析法测量傅里叶透镜焦距的研究

In this paper, the bending problem of rectangular thin plates with free edges laid on tensionless Winkler foundation has been solved by employing Fourier series with supplementary terms.

本文应用Fourier级数加补充项的方法求解了无拉力Winkler地基上自由边矩形薄板的弯曲问题。

In this paper, the Fourier method and corresponding code ( FFTDSP) for dispersion analysis in the bar is applied to the Split Hopkinson Pressure Testing System and the Bar Bar Tensile Impact Testing System.

将傅立叶弥散分析方法和程序（FFTDSP）应用于冲击拉伸和冲击压缩试验中，分析了输入杆和输出杆中波的弥散效应对试验结果的影响。

Non-Fourier Temperature Response in a Plate Under Periodic Temperature Boundary Condition

平板在周期温度激励下的非傅里叶温度响应

Application of Fourier analysis of the dispersion effect to split Hopkinson pressure testing system and bar bar tensile impact testing system

傅立叶弥散分析在冲击拉伸和冲击压缩试验中的应用

A New Method to test Focal Length Using Fourier Spectrum

一种利用傅立叶频谱测量透镜焦距的新方法

Fourier series solution of thick/ thin beam laid on elastic foundations and tensionless elastic foundations

弹性地基与无拉力弹性地基上深浅梁的Fourier级数解法

Based on the analytical solution of heat conduction equation, an equation of temperature wave of the type of Fourier series was derived to predict the response of temperature at variable depths to ground surface condition.

通过热传导方程对土壤中的传热过程进行分析，得到傅立叶级数表示的温度波方程，用于预测不同深度土壤响应地表条件而产生的温度变化。

A 64 points Discrete Fourier Transform code in AVR asm.

64点离散傅立叶变换代码的AVR学会.

NSPS in this limiting form can be written as generalized Fourier integrals which reduce to ordinary phase shift in the constant velocity limit.

NSPS的这种极限形式可以写成广义的傅氏积分，在常速度极限情况下积分减少了普通相移。

Solution of beams on tensionless Winkler foundation by Fourier series and method of successive substitution

用富氏级数及迭代法解无拉力温克勒尔地基上的梁

The methods to prove the termwise derivation and calculate the Fourier coefficient

证明逐项求导公式和计算傅立叶系数的方法

Graphic Presentation of Application Related Concepts in Fourier Analysis.

图示富氏分析之应用相关概念.

A multi-distorted invariant orthogonal moments, Jacobi-Fourier moments ( JFM ), were proposed.

提出一种多畸变不变的正交图像矩: 雅可比 - 傅 立叶 矩.

Firstly, we make a concrete analysis and research on the occurances of iron and titanium in mineral materials by using instrumental analysis methods such as electron paramagnetic resonance spectrometer, differential thermal analysis, X-ray powder diffraction, fourier transform infrared spectrometer, transmission electron microscopy, XRF.

我们首先利用电子顺磁共振波普仪、差热分析、X射线粉晶衍射、傅里叶红外变换光谱仪、透射电镜、XRF等仪器分析手段对矿物原料中铁、钛的赋存状态进行了具体分析与研究。

A implementation of the discrete Fourier transform in visual basic classic.

阿实施离散傅里叶变换在VisualBasic中的经典.