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Author: Jin Guodong） Liu Xiangming） Ta
Abstract: The basic theory and algorithm of radix-2 and mixed radix FFT are presented in the paper.The performance of the two algorithms is compared and analyzed through the simulated data.The result shows that the speed of radix-2 algorithm is faster than mixed ra...
Abstract: The basic theory and algorithm of radix-2 and mixed radix FFT are presented in the paper.The performance of the two algorithms is compared and analyzed through the simulated data.The result shows that the speed of radix-2 algorithm is faster than mixed ra...
Author: CAO Jun, LI Zhi-wei, MENG Zhao
Abstract: According to properties of TE （transmission error） in the CNC router,the FFT （fast fourier transform） algorithm was proposed to carry out spectrum analysis for transmission error data. In order to increase analyzing accuracy and reduce the demand to sampl...
Abstract: According to properties of TE （transmission error） in the CNC router,the FFT （fast fourier transform） algorithm was proposed to carry out spectrum analysis for transmission error data. In order to increase analyzing accuracy and reduce the demand to sampl...
Author: CAO Shu-sen, QIN Jian, KE Jian
Abstract: According to catenary construction, at unreduced precision, a multivariable simulation model of catenary stochastic pulsation wind field based on the harmonic synthesis was proposed, which properly simplifies wind speed coherence function and power spectr...
Abstract: According to catenary construction, at unreduced precision, a multivariable simulation model of catenary stochastic pulsation wind field based on the harmonic synthesis was proposed, which properly simplifies wind speed coherence function and power spectr...
Author: ZHANG Jie,WANG Shi-ying,Lü Min
Abstract: An online frequency monitoring system,which is used to measure the resonant frequency of the sound emission from an ultrasonic vibratory system,is developed based upon data acquired by sound card in computer and an FFT program by means of Radix 2 algorith...
Abstract: An online frequency monitoring system,which is used to measure the resonant frequency of the sound emission from an ultrasonic vibratory system,is developed based upon data acquired by sound card in computer and an FFT program by means of Radix 2 algorith...
Author: FAN Jin, SHI Ya-liu ,JIN Sheng
Abstract: According to the hardware, the software and the real time requirement of the passive radar receive system, it discussed the processor architecture based on Software Define Radio and analyzed emphasis on the each signal processing module, including IF digi...
Abstract: According to the hardware, the software and the real time requirement of the passive radar receive system, it discussed the processor architecture based on Software Define Radio and analyzed emphasis on the each signal processing module, including IF digi...
Author: LIU Dong-liang, Paul Demorest,
Abstract: The resuh of a test that evaluates the effectiveness of CUDA is introduced based FFT and Coherent De-dispersion algorithms using NVDIA GeForce8800GT and Intel Core 2 Quad Q6600. Test result of the large scale data shows that the computing ability of GPU i...
Abstract: The resuh of a test that evaluates the effectiveness of CUDA is introduced based FFT and Coherent De-dispersion algorithms using NVDIA GeForce8800GT and Intel Core 2 Quad Q6600. Test result of the large scale data shows that the computing ability of GPU i...
Author: Liu Jinling, Tang Di
Abstract: Surface Reconstruction issue can be implemented in the way of finding the eigenfunction of implicit function by using transforming relationship of surface integral and volume integral according to the divergence theorem of Stokes＇ Theorem in differential ...
Abstract: Surface Reconstruction issue can be implemented in the way of finding the eigenfunction of implicit function by using transforming relationship of surface integral and volume integral according to the divergence theorem of Stokes＇ Theorem in differential ...
Author: REN Xiang, LU Xuan, LUO Guo-Ju
Abstract: Based on DFT（Discrete Fourier Transform） principle, the system constituted by microcontroller and FPGA is used as for the control core. The composition modules are previous level signal conditioning modules, antialiasing filter module, AD637 detector modu...
Abstract: Based on DFT（Discrete Fourier Transform） principle, the system constituted by microcontroller and FPGA is used as for the control core. The composition modules are previous level signal conditioning modules, antialiasing filter module, AD637 detector modu...
Author: DENG Yibo, XU Yong, LI Haibo,
Abstract: Dielectric loss is a key indicator, reflecting insulation damping, deterioration or gas discharge of high-voltage electrical equipment insulation. Its accurate measurement is very important for the power system security and economy. According to the techn...
Abstract: Dielectric loss is a key indicator, reflecting insulation damping, deterioration or gas discharge of high-voltage electrical equipment insulation. Its accurate measurement is very important for the power system security and economy. According to the techn...
Author: LI Lei, FEI Wei - wei , CEN Fa
Abstract: In the Radar EW, the reahime realization of the broadband digital beamformer is very difficult in practice. The bottlenecks include uhra long points FFT in high speed real time and excessive data communication. This paper presents an efficient scheme whic...
Abstract: In the Radar EW, the reahime realization of the broadband digital beamformer is very difficult in practice. The bottlenecks include uhra long points FFT in high speed real time and excessive data communication. This paper presents an efficient scheme whic...
Author: GAN Feng-lin,YANG Zhen-wei,LI
Abstract: Taking the undergoing Xiangjiaba-Shanghai ultra high-voltage DC ±800kV transmission line project as an example,based on the basic characteristics of fluctuating wind and Kaimal spectra,considering various factors such as structural style of long span tran...
Abstract: Taking the undergoing Xiangjiaba-Shanghai ultra high-voltage DC ±800kV transmission line project as an example,based on the basic characteristics of fluctuating wind and Kaimal spectra,considering various factors such as structural style of long span tran...
Author: WEI Xiao-pu,XU Yong-hai,GUO Ch
Abstract: In this paper,a new parameter estimation method for voltage flicker is proposed in which Pisarenko Harmonic Decomposition（PHD） analysis is used to estimate the flicker parameter included in flicker envelope detected by Hilbert transform.The total number o...
Abstract: In this paper,a new parameter estimation method for voltage flicker is proposed in which Pisarenko Harmonic Decomposition（PHD） analysis is used to estimate the flicker parameter included in flicker envelope detected by Hilbert transform.The total number o...
Author: Li Hui, Wang Yan-fei
Abstract: This paper firstly studies parameter estimation issue directly based on FFT.Thereby,the relationship between the frequency and phase estimation is exposed.Subsequently,the estimation error formula of phase difference arithmetic are deduced and validated b...
Abstract: This paper firstly studies parameter estimation issue directly based on FFT.Thereby,the relationship between the frequency and phase estimation is exposed.Subsequently,the estimation error formula of phase difference arithmetic are deduced and validated b...
Author: YANG Jing,ZHENG En-rang,ZHANG
Abstract: In order to solve the speed and design cost bottleneck of digital spectrum analyzer, a design method of high speed FFT processor based on FPGA was proposed which CycloneⅡ FPGA EP2C35F672C6 chip was used to achieve the processor. The processor adopts the m...
Abstract: In order to solve the speed and design cost bottleneck of digital spectrum analyzer, a design method of high speed FFT processor based on FPGA was proposed which CycloneⅡ FPGA EP2C35F672C6 chip was used to achieve the processor. The processor adopts the m...
Author: ZHOU Lei,CHEN Shi-jin,CHENG Ka
Abstract: In diamond turning,the inevitable vibratory motion between the tool and workpiece generates regular features on the machined surface and deteriorates the surface quality.The simulation of surface generation in diamond turning was proposed to investigate t...
Abstract: In diamond turning,the inevitable vibratory motion between the tool and workpiece generates regular features on the machined surface and deteriorates the surface quality.The simulation of surface generation in diamond turning was proposed to investigate t...
Author: XIE Jing-hua, GONG Ren-xi, NIN
Abstract: Harmonic is an important performance coefficient which characterizes the power system＇s supply quality. A harmonic detection technology based on LabVIEW virtual instrument development platform is presented in this paper, in which the operational principle...
Abstract: Harmonic is an important performance coefficient which characterizes the power system＇s supply quality. A harmonic detection technology based on LabVIEW virtual instrument development platform is presented in this paper, in which the operational principle...
Author: TANG Jun-long, CHEN Lian-ju, W
Abstract: A harmonic analyzer having functions such as signal simulation, data processing, wave itisplaying and accessing is designed with LabVIEW. Harmonic distortion signal of power system is analyzed on simulation. Data processing module realizes the functions o...
Abstract: A harmonic analyzer having functions such as signal simulation, data processing, wave itisplaying and accessing is designed with LabVIEW. Harmonic distortion signal of power system is analyzed on simulation. Data processing module realizes the functions o...
Author: Mei Ying Sun Danan Wei Zhongli
Abstract: Oriented to a converter under vector control, a model of its fault diagnosis with the three-phase current signals as characteristic parameters is established. The output current signals, from which noise is further reduced with wavelet analysis theory, ar...
Abstract: Oriented to a converter under vector control, a model of its fault diagnosis with the three-phase current signals as characteristic parameters is established. The output current signals, from which noise is further reduced with wavelet analysis theory, ar...
Author: LI Xin, LIU Feng, LONG Teng
Abstract: A new direct P-code acquisition method based on FFT is proposed. The main concept of this method is to divide the large time uncertainty into several small time bins. It can greatly reduce the amount of FFT by cooperating with the use of external memory a...
Abstract: A new direct P-code acquisition method based on FFT is proposed. The main concept of this method is to divide the large time uncertainty into several small time bins. It can greatly reduce the amount of FFT by cooperating with the use of external memory a...
Author: CUI Fang-fang
Abstract: By using power system blockset （PSB） of MATLAB, no-load model and short circuit model of three-phase transformer are established. Based on these models, the waves of the magnetizing inrush current during switching three-phase transformer with no load and ...
Abstract: By using power system blockset （PSB） of MATLAB, no-load model and short circuit model of three-phase transformer are established. Based on these models, the waves of the magnetizing inrush current during switching three-phase transformer with no load and ...
Author: TENG Xiao-ji,SUN Yue-qiang,WU
Abstract: The relative movement between the satellites and the receivers will cause the Doppler frequency shift that can reach 10 kHz in the process of digital signal processing,and the received signal will be weak.So a design method is presented,which uses FFT alg...
Abstract: The relative movement between the satellites and the receivers will cause the Doppler frequency shift that can reach 10 kHz in the process of digital signal processing,and the received signal will be weak.So a design method is presented,which uses FFT alg...
Author: Cheng Fatang,Zheng Xiangbo
Abstract: Fast Fourier Transform is the core technique of DSP,and its performing time is shorter a few stages than DFTs,and in the LTE system FFT has important applications.Field Programmable Gate Array is a new type of programmable device at high speed development...
Abstract: Fast Fourier Transform is the core technique of DSP,and its performing time is shorter a few stages than DFTs,and in the LTE system FFT has important applications.Field Programmable Gate Array is a new type of programmable device at high speed development...
Author: Liang Peng, Li Ming, Li Hongmi
Abstract: In order to solve the conflict of radar＇s ability to detect targets and to distinguish targets, the modern radar usually deals with the LFM signal of large time-width and bandwidth by the compression system. A design based on two DSP of TS201 which implem...
Abstract: In order to solve the conflict of radar＇s ability to detect targets and to distinguish targets, the modern radar usually deals with the LFM signal of large time-width and bandwidth by the compression system. A design based on two DSP of TS201 which implem...