FFT

The home works are FFT algorithm and FIR filter design by C or C ++ programming.

两项大型作业内容是FFT快速算法和FIR数字滤波器设计的C语言编程.

The improved algorithm based on split radix FFT meet the real time demand of range compression node and remove the effect of pulse compression result for the overflow.

与传统的基2、基4算法相比，该算法满足距离压缩节点的实时性能要求，同时解决了由于溢出对脉冲压缩结果的影响。

Data of complete time domain waveform is also needed in order to calculate accurate S-parameters of frequency domain via fast Fourier transform ( FFT).

而要通过FFT获得准确的频域散射参数，又必须得到完整的时域波形数据。

High computational burden algorithms such as FFT filtering are avoided in the algorithm so that the algorithm is applicable to real time object counting systems.

该算法避免了傅立叶变换滤波等计算量较大算法的使用，适用于利用图像处理进行目标实时点数的领域。

In calculation, FFT algorithm is used to develop the speed of computation.

计算中采用了FFT算法,提高了计算速度.

Based on the basic theory of hearing, a calculation model for loudness by FFT is proposed.

从听觉响度的基本原理出发，提出一种基于FFT变换响度的数值计算方法，并与Zwicker的图表法比较。

It adopted the dual DSP parallel processing structure, one DSP is responsible for signal sample, filter and FFT iterative count. The another DSP is for the human-computer interaction, the remote telecommunication and real-time controls.

采用双处理器并行处理结构，一个DSP负责进行各回路交流信号的采样、滤波、FFT迭代计算，另一个DSP负责实时控制、人机交互与远程通讯；

DCT is based on FFT ( Fast Fourier Transform ), so integers FFT transform must be structured firstly.

DCT变换采取基于FFT ( fastFourier transform ) 的快速算法, 所以,首先寻找整数FFT变换.

The iterative FFT algorithm is used to design the linear thinned array and the plane thinned array. Comparison with the existing research results, the simulated results confirming the great efficiency and the robustness of the new method are shown in this dissertation. 4.

运用迭代FFT算法快速优化设计了稀疏直线阵列和稀疏平面阵列，并将仿真结果与已有的文献和研究结果进行对比分析，证明了该优化方法的高效性和鲁棒性。

On the acceleration compensation, the thesis analyzes the effects of target's acceleration on several outputs of a linear-phase matched filter based on FFT, such as the output SNR loss and the constraint on optimal accumulative time.

在加速度补偿方面，首先分析了加速度对FFT输出信噪比的损失因子，给出了FFT处理的最佳相参积累时间。

With the FFT analysis it is analyzed that the pressure surge changing laws in the taper pipe and draft tube in time domain and frequency domain.

通过水压力脉动数据的FFT频谱分析，研究了直锥段和尾水管内部在不同位置不同工况下的压力脉动在时域及频域上的变化规律。

The FFT can calculate the actual frequency of voltage and enhance the precision in calculating the time of closing or opening the AC electrical apparatus.

它能够较精确地计算电网电压的实际频率，提高移相延时时间测算的准确度。

This paper presents a novel circuit dynamic analysis method using FFT technique based on diakoptics.

提出了分裂法与FFT技术相结合的动态电路分析法.

When a traditional method based on FFT ( Fast Fourier Transformation) frequency spectrum analysis is used, it is very difficult to effectively differentiate between the thermal effects-induced serious vibration problems and rotor loss-of-balance failures occurring in a turbogenerator.

采用传统FFT频谱分析，很难将汽轮发电机组由热影响引起的剧烈振动问题和转子失衡故障有效地区分开。

Features of different FFT processor constructions especially pipeline& MDC and SDF, is studied combined with algorithm.

本文结合算法研究不同FFT处理器结构的特点，重点研究了流水线结构：MDC和SDF结构。

Based on the ratio of FFT algorithm, is the ratio method using the MATLAB program realize.

基于FFT的比值算法, 是用比值法实现的MATLAB程序.

In time domain measurement of the electromagnetic constants of materials, the measured waveforms need to be analyzed by FFT in order to obtain the spectrum of dielectric constant.

在时域测量时，需要通过FFT才能求得介电常数的频谱特性，而实际测得的波形往往存在多次反射，给求取一个纯净的反射波进行频谱分析带来不便。

A FFT spectrum analyzer was used to measure the resonant frequency.

试验时采用六种实大尺寸试材,共振频率之测定系利用FFT频谱 分析仪.

With the mechanism of task, we develop some typical irregular parallel applications, such as FFT, to test the task scheduling strategies which are implemented by the paper.

利用TASK机制，实现了典型不规则并行的测试用例，例如FFT，用以测试论文提出并实现的调度策略。

GPS capture procedures, using FFT algorithm, search phase code 1024.

GPS捕获程序, 采用FFT搜索算法, 搜索1024个码相位.

According to the low-complexity of R 22 SDF algorithm, a compatible FFT algorithm is proposed.

利用R22SDF算法的低复杂度的特点, 在其基础上演变出一种通用的FFT算法 .

We also analysis and explain it in nature why wavelet has more advantages over FFT method.

论文还从本质上深入分析并解释了小波方法比FFT方法更具优越性的原因.

Example of FFT algorithm in MATLAB complete source code can be directly used by the test.

例如FFT算法在MATLAB环境中完整源代码,可以直接使用.

Software for signal producing, signal gathering, FFT signal correcting and displaying are compiled.

在软件方面,编制了信号产生 、 信号采集 、 FFT频谱分析、校正和显示等模块.

Terrain correction computation by controlling the integral radius using the FFT method

积分半径可控地形改正FFT算法的研究

The new methods can rapidly and efficiently obtain the informations of a real sinusoidal signal's phase on time domain or frequency domain by zero-crossings or FFT transforming. The modified methods can extend the threshold SNR of frequency estimation, and it is easily implemented.

新的修改算法利用零交越或FFT变换，能快速有效地在时域或频域上得到实正弦信号的相位信息，改善了频率估计的SNR阈值，且便于工程实现。

The 256 dots FFT program and FIR digital filter program are programmed in the software.

软件部分,编制了256点FFT应用程序以及FIR数字滤波软件.

D FFT ( Fast Fourier Transform ) transform code, compile and can operate normally.

二维FFT ( 快速傅立叶变换 ) 变换源代码, 可编译通过并能正常运行.

The software includes four parts: main program, FFT program, power algorithm program.

软件也分四部分,分为主程序 、 采样子程序、FFT子程序 和功率电能计算子程序.

Rms algorithm and FFT algorithm have been achieved.

实现了均方根算法和FFT算法.