快速傅里叶变换。
本文利用快速傅里叶变换进行激光多普勒信号处理。
According to the characteristics of laser Doppler signal, using the fast Fourier transform to deal with the Doppler signal.
针对电大散射问题，提出了一种基于快速傅里叶变换的新算法。
The Realization of Fast Fourier Transform Based on FPGA in Laser Spectrum Detection;
快速傅里叶变换(FFT)是离散傅里叶变换(DFT)的快速算法。
Fast Fourier Transform (FFT) is a kind of fast computation method of Discrete Fourier Transform (DFT).
本文用通过快速傅里叶变换来进行逆拉氏变换的方法解决导热逆问题。
In this paper, the inverse Laplace transform via. fast Fourier technique was presented to solve the inverse heat conduction problem.
结合快速傅里叶变换(FFT)技术，可获得通信线上各点的时域暂态横向电压。
The transverse voltage in time domain can be obtained from that in frequency domain by means of FFT.
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。
Fast Fourier transforming is directly used to the output signals of the system to determine the small disturbances in the former literature.
快速傅里叶变换是数字信号处理的常用数学工具，以运算速度快和信噪比阈值低为特点。
FFT is a mathematical tool commonly used in digital signal processing, and is characterized by fast operational speed and low SNR threshold value.
自提出快速傅里叶变换算法(FFT)以来，基于傅里叶变换的谐波测量便得到了广泛应用。
Since the Fast Fourier Transform (FFT) was presented, the harmonics measurement based on Fourier Transform which requires synchronous sampling has been used widely.
提出了一种应用快速傅里叶变换算法提高哈特曼夏克波前传感器波前重构实时性的快速算法。
Based on the fast Fourier transform (FFT) algorithm, the wave-front reconstruction algorithm of Shack-Hartmann sensor is described.
根据快速傅里叶变换(FFT)和数字信号调制解调的特点，给出了一种盲信道质量估计算法。
On the basis of the features of the Fast Fourier Transform (FFT) and digitally modulated signals, this paper proposes a blind channel estimation algorithm.
本文介绍了时间序列分析的线性谱(快速傅里叶变换fft谱)和非线性谱(自回归ar谱)。
In this paper time series spectra, both linear spectrum (FFT spectrum) and nonlinear spectrum (ar spectrum) are introduced briefly.
在求解扩散项和投影项时，采用隐式的求解方法，例如高斯—塞德尔迭代法、快速傅里叶变换。
An implicit method is employed in solving diffusion term and projection term, such as Gauss-Seidel iteration method, Fast Fourier Transform.
分析了按时间抽取（DIT）基-2快速傅里叶变换（FFT）的误差，数据格式为二进制补码。
The error of the decimate in time (DIT) radix-2 fast Fourier transform (FFT) is analyzed, where the data format is two's complement.
工程上广泛应用的现行土层地震反应分析方法即为借助快速傅里叶变换和迭代法的等效线性化频域方法。
The current widely used methods of seismic response analysis for soil layers in engineering are equivalent linearization frequency domain method which is based on FFT and iterative method.
论述了采用定点数字信号处理（DSP）芯片TMS320C5402实现快速傅里叶变换（FFT）。
This paper introduces the Fast Fourier Transform(FFT) implementation in fixed-point DSP TMS320C5402.
快速傅里叶变换在非同步采样和非整数周期截断的情况下存在较大误差，无法获得较精确的间谐波参数值。
The fast Fourier transform (FFT) will bring on higher error under nonsynchronous sampling and truncated non-integral period, thus more accurate interharmonic parameter values cannot be obtained.
该结果表明，快速傅里叶变换(FFT)方法是对探测雷达系统的回波信号进行数字信号处理的有效方法。
The results show that the FFT method is and effective way for the FMCW detection radar in signal processing.
离散快速傅里叶变换算法在频谱分析中得到了广泛的应用，这种算法得到的计算结果是在整个频段上的频谱信息。
Discrete fast Fourier transform (FFT) has been widely applied to signal spectral analysis and can figure out the entire bandwidth spectrum of a signal.
应用快速傅里叶变换算法对靶丸圆周轮廓数据进行分析，获得了靶丸表面外轮廓或内轮廓模数-功率谱特征曲线。
The power spectra curve as a function of the mode number of outer or inner profiles are also calculated by the application of fast Fourier transform to the circumferential profile data.
该算法将复杂的优化问题转化为几十次简单的迭代加以解决，每次迭代只需几次快速傅里叶变换和收缩操作即可。
The algorithm converts the complex optimization problem to several iterations, each of which requires only several simple Fast Fourier Transformations and shrinkage operations.
基于快速傅里叶变换 （FFT）运算和质量中心的概念 ，提出一种快速的高性能估计算法 ，称为质量中心法。
The FFT (fast fourier transform) algorithm and the mass center notion were used to develop a fast estimation algorithm named the Mass Center Method (MCM).
此外，DFT，这通常是由于FFT实现，或快速傅里叶变换，你可能还想阅读有关的STFT(短时傅里叶变换)。
In addition to the DFT, which is usually implemented as the FFT, or fast Fourier transform, you may also want to read about the STFT (short-time Fourier transform).
传统的快速傅里叶变换（FFT）可以有效地对正弦信号进行分析，但对于分析频率相近的正弦信号却存在很大的误差。
Traditional FFT can effectively analyze the sinusoidal signal, but the very big error exists for analyzing the similar frequency sinusoidal signal.
另外，快速傅里叶变换方法由于不受本底噪声影响，可以不必在信号处理时去掉本底噪声，因而可以明显缩短测量时间。
In addition, the FFT method is immune to the background noise of the signal, so that the process of signal-processing by the FFT method can advanced.
主要就快速傅里叶变换算法、全波傅氏算法以及有功功率、无功功率的计算、滤波的参数选取、谐波的计算进行了讨论。
Mainly, FFT algorithm and full-wave Fourier algorithm are discussed. Calculation of active power and imaginary power is researched. Parameter selection of filtration and calculation of are attained.
本文介绍了DVB - S中RS码的编码及常用的译码算法，然后又介绍了几种有限域中快速傅里叶变换(FFT)算法。
RS encoder in DVB-S and some classical decoding algorithms are introduced, then some Fast Fourier Transform (FFT) algorithms in finite domain are presented.
在深入分析快速傅里叶变换(FFT)方法的基础上，针对一类电网信号具有半波对称性的特点，提出了一种改进的FFT算法。
After deeply studied in the fast Fourier transform (FFT) method, this paper presents an improved FFT algorithm considering the half-wave symmetric characteristic of power system signals.
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。
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。
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.
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