frequency aliasing是什么意思_frequency aliasing中文

frequency aliasing中文什么意思

频率混叠
频率混淆

frequency: n. 1.屡次，频仍，频繁。 2.(脉搏等的)次数，出现 ...
aliasing frequency: 混叠频率; 混杂频率; 折迭频率
aliasing: 别名判别; 别名使用, 别名的命名; 混叠现象; 混淆现象; 假像; 假信号; 量化杂讯，频谱混叠; 量化噪声，频谱混叠; 命名别名; 图形失真，锯齿效应，别名使用，混叠信号; 折叠失真; 走样。在进行渲染着色的时候，所绘制的图元直接按照所赋给的颜色绘制象素，就会产生锯齿状的边，这就是走样。; 走样（混叠）当图像像素间距和图像细节相比太大时产生的一种人工痕迹。
aliasing artifacts: 双线性的/狼藉的
aliasing components: 录像重叠部分

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例句与用法

To detect transient signals under complex background , a novel method of aliasing - free exponential bilinear time - frequency distribution is presented in this paper , which can avoid the frequency aliasing and information loss existing in the traditional bilinear distributions , reduce the cross - terms effectively and possess high time - frequency resolution
摘要针对复杂背景条件下瞬时信号的探测，提出一种新的无混叠双线性时间频率分布方法，该方法能够避免常用的双线性时频分布中的频率混叠与信息丢失，有效减小交叉项干扰，而且具有较高的时频分辨率。
It mainly includes following aspects : in this paper , firstly implication of wavelet analysis in signal harmonic component extraction is presented in detail , and on this foundation signal given frequency band component extraction method is proposed . then we investigate frequency aliasing phenomenon , reason why frequency aliasing phenomenon is easy happened when wavelet is implied in field of motor fault diagnosis , and frequency bands where frequency aliasing phenomenon is easer happened , and put forward approved morlet wavelet analysis method which can effectively alleviates frequency aliasing phenomenon . third we set up vibration signal detected system , design experiments to obtain three groups of fault signals : eccentricity fault , mixed fault of eccentricity plus mild rub , mixed fault of eccentricity plus moderate rub , and process these data using analysis method proposed in this paper
首先对论文的选题以及相关背景进行了探讨,并对相关的小波基础理论进行了阐述,主要针对感应电动机的偏心故障和偏心+碰摩复合故障形式及相关的应用算法进行了详细探讨,主要工作内容包括下面几个方面:在论文中,首先对小波分析在信号的谐波分量提取中的应用进行了研究,在此基础上,提出了信号的特定频带成分的提取方法;研究了小波分析的频域混叠现象,探讨了小波分析应用于电机故障诊断领域时易发生频域混叠现象的原因,以及混叠现象较易发生的频带,提出了可以有效减轻频域混叠现象的改进的morlet小波分析方法;搭建了振动信号检测系统,设计实验采集得到三组故障数据:偏心故障,偏心+轻微碰摩复合故障,偏心+中度碰摩复合故障,并对这些数据应用本文提出的分析方法进行信号处理,提取出的特征参数可有效区分这两种故障形式;研究了基于matlab和labview的混合编程方法,完成了电机故障检测系统的软件开发。

frequency aliasing中文什么意思

例句与用法

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