傅利叶变换的英文

• fourier transform

• "傅"英文翻译    assist; instruct; teach appl ...
• "叶"英文翻译    leaf; foliage
• "变换"英文翻译    vary; alternate; commutation ...
• "离散傅利叶变换" 英文翻译 :    discrete fourier transform
• "傅利叶级数" 英文翻译 :    fourier series
• "傅利叶透镜" 英文翻译 :    fourier le es; fourier lenses
• "傅利叶转换" 英文翻译 :    fourier transform
• "短时傅利叶转换" 英文翻译 :    short-time fourier transform
• "分数傅利叶转换" 英文翻译 :    fractional fourier transform
• "离散傅利叶转换" 英文翻译 :    discrete fourier transform
• "量子傅利叶转换" 英文翻译 :    quantum fourier transform
• "气相色谱－傅利叶红外联用" 英文翻译 :    gc－ftir
• "单叶变换" 英文翻译 :    univalent transformation
• "傅理叶变换" 英文翻译 :    fourier tra formation; fourier transformation
• "傅里叶变换" 英文翻译 :    fourier analysis; fourier tra formation; fourier transform （ft）; fourier transformation; fouriertransformation fourier transform; ft，fourier transform
• "傅立叶变换" 英文翻译 :    fourier transformation
• "付里叶变换" 英文翻译 :    fouriertransform
• "里叶变换傅" 英文翻译 :    fouriertransform
• "反傅里叶变换" 英文翻译 :    inverse fourier transform
• "傅里叶变换对" 英文翻译 :    fourier pair; fourier transform pair; fourier transform spectromether; fouriertransformpairs
• "傅里叶变换式" 英文翻译 :    fourier transformation; fourier transforrm; fouriertransform
• "傅立叶变换对" 英文翻译 :    fourier transform pairs
• "光傅里叶变换" 英文翻译 :    optical fourier transform
• "逆傅里叶变换" 英文翻译 :    inverse fourier transform
• "双傅里叶变换" 英文翻译 :    double fourier transformation

• A new method for person ' s face identifying by one - dimensional fourier transformation
  基于傅利叶变换的人脸识别改进方法
• Besides , digital signal processing technology in ac contactors electric life test is studied in this paper . under the principles of digital signal processing , using fft , the calculate process of power supply frequency and power factor is discussed
  此外，本文研究了交流接触器电寿命试验中数据处理技术，应用数字信号处理理论，利用傅利叶变换，分析了电源频率、功率因数的计算过程。
• In this thesis , summarized the basic theories of fourier transformation and the fast fourier transformation that are generally adopted to detect and analyze the electric power harmonic in the electric power supply system . at the same time , summarized the even sample principle , the phenomenon of frequency mix , the window functions and the frequency leaking as so on , those are closely - related to sample from figure signal
  简要阐述了电力系统谐波检测分析所普遍采用的傅利叶变换和快速傅利叶变换的基本理论以及与数字信号采样密切相关的均匀抽样定理、频谱混叠现象、窗函数和频谱泄漏等的基本理论。
• As to the video signal , alarm signal , control signal , are all weak electricity signal , exceedingly easily be subjected to the jam , in case the power supply system does not steady , wave propag ation is greatly , the harmonic content of power source overtops , the veins wave factors are great unduly , and even power source equipment breakdown , outputting abnormal , will be about to affect the video signal image effect , and dependability cuts downs to the security and alarming system . we adopt fast fu lye ' s mutation rule - fft alternatives , by the way of carrying fft alternatives to the local junction circuit , regulated power supply , ups ' s power source , and switch power source , thereby diagnose every degree harmonious wave content of power souse , and abnormal coefficient , compared to the normal working situation . thereby diagnose out the working condition of the regulated power supply , ups ' s power source , and switch power source
  如果有供电系统不稳定、波动大，电源的谐波含量过高，纹波系数过大，乃至电源设备损坏、输出异常等情况出现，将会严重影响视频信号的图像效果，大大降低防盗系统的稳定性和可靠性，我们采用快速傅利叶变换原理，即fft变换，通过对市电、稳压电源、 ups电源、开关电源等的电压信号进行fft变换，从而得出信号中各次谐波的含量及信号畸变系数，并将其与正常工况下的参数进行对比，从而进一步诊断出稳压电源、 ups电源、开关电源等设备的运行状况；组成监控系统的设备长期处于工作状态，往往由于设备散热条件不好、设备老化故障等原因导致设备表面温度过高，从而影响设备的正常运行，降低设备的使用寿命。
• After the system has been synchronized , we first use the least square method to make channel estimation , then separate the channel response information from the channel noises by dft . a weighting function based on the minimum mean square error ( mmse ) criteria can be applied to the time domain channel impulse response
  在系统同步条件下，首先使用最小平方方法来估计信道响应，然后利用离散傅利叶变换的性质把信道响应信息和信道噪声分离，并在时域按最小均方误差准则做加权处理。
• The identification of ltv system has beenreceivedincreasingattentionnowadays . fourier transform ( ft ) and short time fourier transform ( stft ) can ’ t satisfythe requirement of non - stationary signal analysis . with the multiresolution character , wavelet transform ( wt ) is widely applied in analysis of non - stationary signal andsolving partial differential equations
  傅利叶变换、短时傅利叶变换都不能满足分析非平稳信号的要求,小波变换是一种具有多分辨、多尺度特点的信号分析方法,广泛应用于非平稳信号的分析研究中。
• Summarized no - line loads and the present situations of the electric power harmonic pollution in the guangyuan district ' s electric power supply system ; explained the theories of fourier transformation and the fast fourier transformation those are widely adopted by majority scholars to examine and analyze the electric power harmonic in the electric power supply system . summarized the principle of even sample , the frequency mix phenomenon , the window functions and the frequency leaking as so on , those are closely - related to the figure signal
  简要阐述了电力系统谐波检测分析所普遍采用的傅利叶变换和快速傅利叶变换的基本理论，简要阐明了与数字信号采样密切相关的均匀抽样定理、频谱混叠现象、窗函数和频谱泄漏等的基本理论，同时阐述了电力系统的谐波检测与分析的相关理论基础知识。
• The fem program dsa ( dynamic stability analysis ) developed on the basis of the dynamic stability theory , the basic theory of spectrum analysis and the fast fourier transform ( fft ) algorithm is introduced . the spectral analyses of three earthquake waves are made using fft algorithm . all the process is realized by programming in matlab5 . 3
  介绍了本人基于动力稳定理论编制的有限元程序dsa ；然后阐述了频谱分析的基础理论和快速傅利叶变换( fft )算法，并以fft为基础，基于matlab5 . 3编制了对某地震波进行频谱分析的计算程序，并对三个地震波进行了频谱分析。
• Firstly , developing status of routine test of hydroelectric generation set and trouble diagnosing in china and abroad are introduced ; secondly , the article specifies the structure of cims and basic theory and technology . cims is composed of monitoring apparatus and analyzing system , signal processing uses fft and df ; in the end , function of cims is specified . monitoring apparatus is designed of 80c196kb and 89c52 , the monitoring soft adopts microsoft visual basic 6 . 0 and the database is developed of microsoft access 2000
  文章首先介绍了水电机组常规试验及故障诊断国内外发展现状；然后给出了系统的结构框架和理论技术说明，本系统由监测装置和软件分析系统组成，信号处理采用了快速傅利叶变换和数字滤波技术；最后详细分析了系统功能，监测装置使用80c196kb和89c52单片机技术开发，监测软件使用visualbasic6 . 0语言编制，数据库采用microsoftaccess2000 ，监测系统分为三大部分：运行状态监测模块、故障分析及数据处理模块、水轮发电机组常规试验模块。