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傅里

傅里

傅里

1

Fast Fourier transforming is directly used to the output signals of the system to determine the small disturbances in the former literature .

以往的文献对此系统的输出信号直接作快速傅里叶变换，对外界微扰动信号进行定位。

2

It was shown in [23 ] that the time-frequency pair of orthonormal basses that are related via the Fourier transform is highly incoherent .

文献 [23 ]证明了，通过傅里叶变换相关的规范正交的低沉音的时间 -频率对是高度不相干的。

3

Fourier transform is a way of looking at a time series as a sum of sine waves at different frequencies .

傅里叶变换是一种把它看成不同频率的正弦波的级数和的方式。

5

Chirplet transform is the general form of Fourier transform, short-time Fourier transform and Wavelet transform .

线调频小波变换是傅里叶变换、短时傅里叶变换和小波变换的一般形式。

7

By means of the split-step Fourier method, the propagation of solitons in a photonic crystal fiber (PCF) is numerically simulated.

利用快速分步傅里叶方法数值计算了孤子在光子晶体光纤中的传输。

8

The Fourier transform is an integral expression for a Fourier series applied to an infinitely long signal.

傅里叶变换式是对博里叶级数的一种积分表达式。

11

For a general asymmetric optical system , the Fourier transform conditions of the system are derived by using the ray matrix method.

本文应用光线矩阵方法，分析一般的非对称系统，导出了该系统的傅里叶变换条件；

12

The carrier pattern is captured by a CCD camera. Then the phase of the object can be derived by FTM and the shape measurement is realized.

用 CCD 采集该载波条纹图，利用傅里叶变换法可解调出物体高度的位相信息，从而实现物体的形貌测量。

13

Fourier transform infrared (FTIR) spectroscopy technology becomes one of the most efficient methods in the study of atmospheric species .

傅里叶变换红外光谱（FTIR ）技术已经成为研究微量大气组分的有效方法。

14

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

物质来说，傅里叶定律必须改写成具有更普遍意义的形式。

15

Phase unwrapping continues to be an important step in those techniques that obtain the phase from Fourier transforms .

相位展开仍然是一个重要步骤，这些技术的获取阶段从傅里叶变换。

16

17

A function whose Fourier transform is itself is called a self -Fourier function .

研究了二维变换中的自傅里叶 -菲涅耳函数。

19

For the microscopy by off-axis lensless Fourier transform holography , Fresnel reconstructing method is better than the convolution method.

对于离轴无透镜傅里叶变换全息显微来说，菲涅耳近似重建方法优于卷积方法。

20

Extended Fourier diffraction theory was used, and a relation of function depended on incident angle .

该方法是傅里叶衍射理论的扩展，是一种依赖于入射角的函数。

21

22

The formulations of the response are developed from the those of the frequence -domain by the Fourier transform .

用傅里叶变换由频率域公式导出了时间域的响应公式。

24

This is not to say that Marx learnt nothingfrom utopian thinkers like Fourier , Saint-Simon and Robert Owen .

这并是不说，马克思从乌托邦思想家如傅里叶、圣西蒙、罗伯特 .欧文处一无所学。

26

The lens -less device is called a Planar Fourier Capture Array .

这种无镜头照相机被称为平面傅里叶捕获阵列。

27

To improve the performance of Fourier transform spectrometer , precise position and position error measurement methods are proposed .

为提高傅里叶变换光谱仪的性能，提出了一种精密的激光干涉信号位置及位置偏差提取方法。

28

The influences of the CCD resolution and the discrete Fourier transform characteristic on correlation results are discussed .

讨论了 CCD 分辨率和离散傅里叶变换等因素对光电混合检测效果的影响。

29

The lifting wavelet transform does not depend on Fourier transform , so the calculation is simple and the operating speed is fast .

提升小波不依赖傅里叶变换，计算简单，运行速度快。

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