Fourier transform

基本解释

That s part of what makes Fourier wonderful. Nonetheless, for some signal-processing applications, banded matrices could prove more efficient than the Fourier transform.
那是傅里叶变换美妙的部分，但对于某些信号处理应用来说，带状矩阵可以比傅里叶变换更加高效。
The trick is to use what is known as a "fast Fourier transform" to unpick more than 300 separate colours of light in a laser beam, each encoded with its own string of information.
这种技术是使用“快速傅里叶变换”把一束激光中的超过300中不同的光的颜色的光分解出来，每一种光被编码成它自己的信息串。
Each of its pixels is sensitive to specific incident angles and supplies a component of the mathematical operation called the Fourier Transform to produce an image about 20 pixels across.
它的每一个像素点都对指定的入射角十分敏感，并提供一部分称为“傅里叶变换”的数学运算以产生一张20像素的图像。

The new single-laser fiber-optic speed record was set using a technique called fast Fourier transform that pulses light at an incredibly high rate with data encoded in 325 distinct colors across the spectrum.
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an integral transform, used in many branches of science, of the form F(x) = [1/(2)]ef(y)dy, where the limits of integration are from to + and the function F is the transform of the function f

傅里叶变换
Fourier transform is the basis for the coherent processing in radar imaging.
雷达成像现均采用基于傅里叶变换的相干处理。
傅里叶分析
傅立叶转换

傅里叶变换
Based on fractional Fourier transform, this paper presents four digital watermarking algorithms.
本文提出了四种基于分数傅里叶变换的数字水印算法。
傅立叶变换