fast Fourier transform

基本解释

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。
In the current experiment, the team sent their signals down 50km of optical fibre and then implemented what is known as an optical fast Fourier transform to unpick the data streams.
在这儿，研究者们采用一种被称为光学快速傅里叶变换的方法来分离出数据流。
Experimental results show that this method achieves the same accurate level as classic fast Fourier transform (FFT) based method with invariance to illumination change and lower computation costs.
实验结果表明该算法相对传统基于快速傅立叶变换法具有同等精度、抗光照变化及计算量少的特点。

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.
ENGADGET: blogger-avatar

快速傅里叶变换
This method is based on the fast fourier transform (FFT). The fluorescence lifetime is obtained from the tangent function of the phase angle of the non-zeroth items of the FFT result.
本方法利用快速傅里叶变换(FFT)结果作为基础，从非零项的相位角的正切值得出被测的荧光寿命，具有速度快、误差小、不受本底干扰等一系列优点。
快速傅氏变换
Main content and results include the following two aspects.1. A detailed description about the basic performance parameters of ADC’s dynamic parameters was given respectively, and the main testing methods—the fast Fourier transform test method was also introduced.
主要内容包括以下两个方面:1.系统阐述了ADC的主要动态性能参数和针对动态指标测试的快速傅氏变换法。
快速付立叶变换
快速傅式转换
快速傅立叶转换
快速傅利叶转换
快速傅氏转换

快速傅里叶变换
Fast Fourier Transform(FFT) is widely used in the science and engineering fields.
快速傅里叶变换(FFT)在科学和工程领域有着广泛的应用。
快速fourier变换
Based on the interpolated fast Fourier transform (IFFT), and considering the long-range leakage effect, an iterative IFFT algorithm is proposed.
结合插值快速Fourier变换,并考虑了长程泄漏的影响,提出了一种迭代插值FFT方法。
快速傅立叶变换