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快速傅立叶变换的方法
相关语句
  fast fourier transformation method
     Defining the correlation function for nucleotide sequences,the power spectrum of nucleotide sequences is investigated by Fast Fourier Transformation method. The result shows that the power spectrum of base correlation at low frequencies can be approximated by 1/f α.
     定义了核酸序列的关联函数,并用快速傅立叶变换的方法求出了核酸序列的碱基关联功率谱.结果发现:功率谱的低频端具有1/fα涨落.对于大部分包含关联长周期的序列,α的值在1和2之间;
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  “快速傅立叶变换的方法”译为未确定词的双语例句
     In order to proof the program's effectiveness, we made some experiments on LY-12A1 by SHPB.In addition, based on the Pochhammer-Chree's theoretical solution about the stress wave propagation in infinite cylindrical bar, a numerical approach for analyzing dispersion in SHPB experiments is developed.
     为了定量分析这一偏差,本文运用Pochhammer-Chree有关无限长圆杆中谐波三维弹性解析解的分析理论,采用快速傅立叶变换的方法,编写了有限长圆杆中应力波弥散分析的弥散修正程序。
短句来源
     We introduce the Winograd fast fourier transform in this paper.
     介绍了Winograd快速傅立叶变换的方法
短句来源
  相似匹配句对
     We introduce the Winograd fast fourier transform in this paper.
     介绍了Winograd快速傅立叶变换的方法
短句来源
     A Fast Fourier Transformation Micromagnetism Method
     快速傅立叶变换微磁学方法
短句来源
     Implementation of the Ultra High Speed FFT
     超高速快速傅立叶变换的实现
短句来源
     A Method of FFT-Based Wavelet Transform
     一种基于快速傅立叶变换的小波变换方法
短句来源
     Parallel Calculation of Fast Fourier Transform on Multi-Computer System
     快速傅立叶变换的多机并行计算
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This paper presents a new method for diagnosing harmonics in powersystems with an artificial neural network.Instead of conventional fast Fourier transform(FFT),BP model is trained to reflect the ae current(voltage)signals to the quantities oftheir fundamental component and higher harmonics.The test results show that the proposed method is of high speed and accuracy,With the easy of hardware the method canbe put to on line ues.

本文提出了一种应用人工神经网络模型诊断电力系统中谐波含量的新方法。用误差反向传播模型(BP模型)取代传统的快速傅立叶变换方法,对BP模型进行训练,得到由电流(或电压)采样值映射出基波和谐波含量的BP模型。试验结果表明,该方法具有速度快、精度高的优点,硬件实现简单,同时具有在线应用的特点。

Defining the correlation function for nucleotide sequences,the power spectrum of nucleotide sequences is investigated by Fast Fourier Transformation method.The result shows that the power spectrum of base correlation at low frequencies can be approximated by 1/f α.α ranges from 1 to 2 in sequences with long periodicity components in base correlation,and its average is about 0.5 for all sequences in Genbank.

定义了核酸序列的关联函数,并用快速傅立叶变换的方法求出了核酸序列的碱基关联功率谱.结果发现:功率谱的低频端具有1/fα涨落.对于大部分包含关联长周期的序列,α的值在1和2之间;而对于Genbank中全部序列,α的平均值约为0.5.

Objective The goal is to detect the pulse signals of human body effectively and to analyze physio pathological information embodied in pulse.Methods In the light of acoustic theory,a non contact type detecting system of pulse signals is designed,which is used to detect the four kinds of pulse signals.The pulse signals were processed by using the fast Fourier transforms.Results The power spectra of pulse signals were obtained,the power spectral characteristics were analyzed and compared.Conclusion Some...

Objective The goal is to detect the pulse signals of human body effectively and to analyze physio pathological information embodied in pulse.Methods In the light of acoustic theory,a non contact type detecting system of pulse signals is designed,which is used to detect the four kinds of pulse signals.The pulse signals were processed by using the fast Fourier transforms.Results The power spectra of pulse signals were obtained,the power spectral characteristics were analyzed and compared.Conclusion Some clues are drawn,which may be of great value in the objective study of pulse diagnosis and in the non invasive diagnosis of cardiovascular system.

目的有效地获取人体脉搏信号和分析脉搏所包含的生理病理信息。方法利用声学原理,设计了一种非接触式的脉搏信号检测系统,提取了人体四种脉搏声信号;应用快速傅立叶变换方法对脉搏信号进行了分析。结果获得了脉搏信号的功率谱,并对功率谱特征进行了分析和比较。结论得出了若干对中医脉诊客观化研究和人体心血管系统疾病的无创伤诊断有重要参考价值的结论。

 
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