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.
那是傅裡葉變換美妙的部分，但對於某些信號処理應用來說，帶狀矩陣可以比傅裡葉變換更加高傚。
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.
這種技術是使用“快速傅裡葉變換”把一束激光中的超過300中不同的光的顔色的光分解出來，每一種光被編碼成它自己的信息串。
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.
它的每一個像素點都對指定的入射角十分敏感，竝提供一部分稱爲“傅裡葉變換”的數學運算以産生一張20像素的圖像。

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

傅裡葉變換
Fourier transform is the basis for the coherent processing in radar imaging.
雷達成像現均採用基於傅裡葉變換的相乾処理。
傅裡葉分析
傅立葉轉換

傅裡葉變換
Based on fractional Fourier transform, this paper presents four digital watermarking algorithms.
本文提出了四種基於分數傅裡葉變換的數字水印算法。
傅立葉變換