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Chinese translation for "morlet"

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Example Sentences:
1.Morlet wavelet analysis shows that decadal period of longitudinal excursion of sah during summer is very notable , including a 10 - year period and a 25 - 30 - year period
对该系列进行小波分析发现夏季南亚高压东西振荡的年代际周期是非常明显的,存在10年周期态和25 - 30年周期态。
2.Analysis using method of morlet and mexican hat wavelet transform shows that there were 2 to 5 years and quasi - 7 years oscillations in the summer rainfall over shandong
结果表明,山东夏季旱涝存在着明显的阶段性和群发性的特征。 1961 1978年雨涝发生频繁, 1979 1992年是干旱的群发阶段,雨涝较少。
3.The morlet wavelet transform is applied in choosing the fault line and detecting the transient high frequency signals . the virtues and flaws in various criterions and algorithm have been compared
利用morlet小波变换后的实部、虚部、模值以及相角来实现故障选线及暂态分量的提取,并比较了各种判断方法及小波算法的优缺点。
4.In this thesis , continuous morlet wavelet and discrete daubechies2 wavelet are used . the main contributions is as follows : the instantaneous frequencies of psk and fsk signals are estimated by using wavelet transform
主要研究了连续morlet小波变换的应用,以及利用daubechies小波分解提取小波细节特征向量进行信号识别的研究。
5.During flood years , the center of negative anomaly is around ural mountains , the center of positive anomaly is around high - latitude of east asia and another negative and positive center are over okhotsk sea and the north - west pacific , respectively
通过对夏季旱涝等级指数的morlet型和mexicanhat型小波变换分析,发现山东夏季旱涝指数主要存在着2 5年和7年左右的周期振荡。
6.In order to analyze the rotation noise further , a new method for measuring the amplitude and phase of each harmonic component of periodic signal mixtures is established based on the morlet transform and fourier transform in theory , which will provide scientific warranty for reducing noise of disk mill
为了进一步分析爪式粉碎机的旋转噪声,理论上利用morlet小波变换结合fourier变换对旋转噪声各次谐波成分的振幅和初相位的提取,作了初步探讨。
7.An algorithm that can extract harmonics " amplitudes using morlet wavelets is put forward . compared with the full - wave fourier algorithm , the algorithm proposed in this article is more stable when the frequency of electric network flutters . meanwhile the algorithm has the rapidity of giving out the
在电网频率波动情况下,通过比较说明短窗morlet复小波算法在频率波动过程中具有比傅氏算法更稳定的特点,同时也可以达到1 3周波内完成的快速性。
8.It can been predicted by morlet wavelet transform that the 10 years after 2000 would appear an increasing rainfall trend in summer in northwest china . ( 5 ) the drought and flood have obviously interannual oscillatory variabilities . the climate is moist from 1980 ' s to early 1990 ' s . it ' s the extremely dry period in the 40 years when the rainfall is plentiful while drought happened now and then after 1995
( 5 )西北地区夏季旱涝异常区区域旱涝指数的时间演变特征表明:青藏高原东北侧和渭水流域的夏季旱涝以20a与8a的年代际变化为主,北疆主要存在8 9a的周期振荡,河西走廊即有15a周期振荡,又有8 10a的周期振荡。
9.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。
10.In this paper , based on the wavelet theory which is considered an important breakthrough to fourier analysis , the variations of air temperature and precipitation during the recent 50 years in heilongjiang province have been analysed using the morlet wavelet transformation method . wavelet transformation with fourier power spectral analysis are compared
本文以近年来被认为是fourier分析方法突破性进展的“小波理论”为基础,采用morlet小波变换方法分析了黑龙江省近50年来的气温和降水的变化规律,并与传统的功率谱分析结果进行了比较。
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