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两种改进的软件同步采样实现方法的分析理论与实践研究 被引量:19
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作者 裘云 王健 秦霆镐 《电测与仪表》 北大核心 2000年第9期5-7,共3页
阐述了两种通过软件同步采样提高周期信号分析精度的算法。通过仿真计算和比较,对其误差进行了定量分析,为交流电参量测量选择提供了依据。
关键词 软件同步采样 交流电参量测量 周期信号分析
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Detecting Singularities with Harmonic Wavelets
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作者 CATTANI Carlo 杨建国 《Journal of Donghua University(English Edition)》 EI CAS 2009年第5期544-548,共5页
A simple method,based on harmonic wavelet analysis is proposed for the decomposition of a given energy bounded signal into a periodic signal and a pulse.Alike a denoising method,the first part signal it might represen... A simple method,based on harmonic wavelet analysis is proposed for the decomposition of a given energy bounded signal into a periodic signal and a pulse.Alike a denoising method,the first part signal it might represent a smooth periodic function while the pulse is a singular unpredicted perturbation (taken as a fault).It will be shown that,under some general conditions,by a simple projection into two disjoint space of functions we can easily separate the periodic component of the signal from the fault (represented by the singular pulse). 展开更多
关键词 WAVELETS SIGNAL noise Fourier series
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