fast Fourier transform algorithm
英
美 [fæst ˈfʊrieɪ trænsˈfɔːrm ˈælɡərɪðəm]
网络 快速傅立叶变换算法; 变换算法
双语例句
- Fast Fourier transform algorithm for the combined integral equation to solve electrically large scattering problems
电大散射问题的复合场积分方程快速傅里叶变换算法 - Because it is too complex to actualize fast fourier transform algorithm with assembly lan-guage in DSP device and the currency of assembly language is too bad, the repeat arithmetic is intro-duced.
针对在DSP器件上直接用汇编语言编程实现快速傅立叶变换过于复杂，通用性差的问题，引出一种重复算法。 - Discrete Wavelet Transform Algorithm-Based on Fast Fourier Transform Algorithm
一种基于FFT计算离散小波变换的方法 - The fast Fourier transform algorithm for the production of the permutation factor circulant matrices;
给出了一类置换因子循环线性系统求解的一种快速算法。 - In order to improve the operation tempo of Hilbert transform, this paper recomposed the primary operation method on the basis of FFT ( Fast Fourier Transform Algorithm).
为了实现希尔伯特变换的快速计算，本文以FFT快速傅里叶变换为基础，对原算法进行了改进。 - Implementation of High Speed Fixed-piont Fast Fourier Transform Algorithm Based on FPGA
基于FPGA的高速定点FFT算法的实现 - With this method, the spectrum leakage can be avoided more effectively than Fast Fourier Transform algorithm and better accuracy can be assured in certain frequency range.
这种方法与传统的快速傅立叶变换算法相比，避免了由于基波频率提取不准而造成的频谱泄漏，在一定的基波频率变化范围内具有较高的精度。 - A fast Fourier transform algorithm for the production of the permutation factor circulant matrices of order n based on the fast Fourier transform ( FFT) was presented, and arithmetric complexity is O ( nlog_2n).
借助于快速傅氏变换（FFT）技术，给出了计算2个n阶置换因子循环矩阵之乘积阵的一种快速算法，其算术复杂性为O（nlog2n），最后给出一个算例。 - Fast Fourier Transform Algorithm is used to solve the wave equation and numerical calculation is made on the directional force seismic source. Its characteristics are also analysed.
用傅氏变换法求解波动方程，对方向力震源进行了数值计算，并分析了该震源所产生波场的特点。 - A fast fourier transform algorithm to estimate carrier frequency deviation
快速傅里叶变换载波频偏估计算法 - Research on improved fast Fourier transform algorithm applied in suppression of discrete spectral interference in partial discharge signals
局部放电窄带干扰抑制中改进快速傅里叶变换频域阈值算法的研究 - Computing optimization of fast Fourier transform algorithm
快速富里叶变换算法的计算优化 - Employing the Fast Fourier Transform Algorithm ( FFT) to determine the initial tap coefficients of equalizers is fundamentally different from using the current iteration method.
用快速离散傅立叶变换（FFT）的方法确定均衡器的初始抽头系数，它区别于目前常用的迭代算法。 - On the basis of comprehensive researches of the existing Gaussian filtering method for surface roughness, the convolution algorithm and fast Fourier transform algorithm for the Gaussian regression filter and Gaussian robust filter have been deduced and the C codes have been programmed.
在讨论现有表面粗糙度高斯滤波方法的优缺点的基础上，推导了高斯回归滤波及高斯稳健滤波的卷积算法和快速傅里叶算法过程，编写了算法的C语言代码。 - In order to eliminate the transient current and ensure the test precision, this paper introduces the principle and the method of phase selection of the AC based on FFT ( Fast Fourier Transform Algorithm).
为了消除暂态电流，本文阐述了一种基于快速傅立叶变换（FFT）的交流选相合闸技术的原理以及实现方法，保证了检测精度。 - With regard to the software design, we realized the software filter for anti-intermixing ( FIR); and we use the Fast Fourier Transform Algorithm ( FFT) to analyze the harmonic of the voltage and current;
软件算法方面，系统对信号采用了抗混叠软件滤波（FIR），并采用传统的快速傅立叶变换（FFT），对采样的电压和电流信号进行频谱分析。 - A parallel fast Fourier transform algorithm on the star interconnection networks
基于星形互连网络的并行快速傅立叶变换算法 - The fast Fourier transform algorithm for the inversion of block K-circulant Toeplitz matrices
分块K-循环Toeplitz矩阵求逆的快速付氏变换法 - The Fast Fourier Transform Algorithm is an important signal analysis method, and FFT application in the earth resistance tester can improve its anti-interference ability.
快速傅立叶变换（FFT）是重要的信号分析工具，在接地电阻检测仪中应用FFT变换可提高仪器的抗干扰能力。 - This paper presents the fast Fourier transform algorithm ( FFT) in the digital frequency analysis and the inversion of earthquake wave. Taken the case of project of dynamical reciprocity between dam and foundation, two methods of earthquake wave input were analyzed and compared.
利用快速傅立叶变换（即FFT算法）进行了地震波的数字频谱分析和地震波的反演，结合坝与地基动力相互作用的工程实例，对地震波的2种输入方法进行了动力分析比较。 - In addition, in application of the potential field downward continuation of krylov subspace method, introducing fast Fourier transform algorithm is a very important step, or it will be limited by the large number of data.
另外，在位场向下延拓的krvlov子空间方法的算法实现上，快速傅里叶变换算法的引入是极为重要的一步，否则会受到数据量大的限制。 - Parallel fast Fourier transform algorithm is used to calculate the Coulomb field distribution, and reduce the complexity of the algorithm. The computing speed is substantial increased.
利用并行快速傅立叶变换算法计算库仑场分布，降低算法复杂度，使计算速度大幅提高。 - With digital filter, Fast Fourier Transform Algorithm ( FFT) and some other algorithms, the data collected are flexibly processed. The real-time simulation is realized in DSP.
利用数字滤波、快速傅立叶变换（FFT）等数字信号处理算法，DSP对采样数据进行实时处理；实时仿真直接在DSP中实现。 - Because a fast Fourier transform algorithm is used to represent the spatial derivatives in pseudospectral time-domain method ( PSTD), the spatial sampling rate of PSTD method is independent of the overall electrical size of the structure being modeled, which greatly reduces the spatial sampling rate.
伪谱时域方法（PSTD）因采用快速傅立叶变换算法求解空间微分，其空间网格采样率与总体尺寸无关，极大地减少了空间采样率。 - According to the Fourier transform relationship exists between the array factor and the element excitations in thinned array, an iterative fast Fourier transform algorithm based on the classic density-tapered array optimization design is presented and the detailed theory of the method is discussed. 3.
根据稀疏阵列中阵列因子与阵元激励之间存在的傅里叶变换关系，在经典密度加权阵列设计方法的基础上，完善了一种基于迭代FFT算法的阵列优化方法，并详细阐述了其原理。 - In software programming, the paper describe Fast Fourier Transform algorithm and the design of the digital filtering while digitize the leaking sound signals in the DSP chip.
在软件编程方面，文中详细的阐述快速傅立叶变换（FFT）的算法和数字滤波器的设计，同时将其嵌入到DSP芯片中对漏水声音信号进行数字化处理。 - It has modular design, fast Fourier transform algorithm and intuitive user interface. With the help of Visual C++ program, the software has good portability and functional development.
软件采用了模块化设计，快速傅立叶算法和直观的人机界面，强大的Visualc++程序开发软件使程序具有良好的可移植性和功能拓展性。 - Power quality detection is the classic fast Fourier transform algorithm ( FFT), it can accurately draw the technical indicators and stable.
在电能质量检测方面，本文采用的是经典的快速傅里叶变换算法（FFT），它能够准确而稳定的得出各项技术指标。 - Then, the harmonics in simulation output are analyzed by Fast Fourier Transform Algorithm ( FFT).
然后，利用快速傅里叶变换工具（FFT）对仿真结果进行谐波含量分析。 - Secondly, using the Fast Fourier Transform algorithm ( FFT) of CreditRisk+ model to calculate the loss distributions and economic capital of retail loan portfolio in the situation of the varying PD.
然后，在违约率可变的条件下，采用CreditRisk+模型的快速傅立叶变换（FFT）算法计算出零售贷款组合整体的损失分布和经济资本。