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Reassigned-Cohen-Class
介绍了 Cohen类双线性时频分布并针对交叉干扰项影响无法完全消除的问题进行了重排时频变换以提取及分辨
含有白噪声和窄带周期干扰的局部放电信号。处理仿真和现场检测到的局部放电超声信号时根据白噪声和窄带
周期干扰信号在时域上的平稳性特性发现重排 Cohen类时频变换方法不仅可以很好地将局放信号和背景噪声以
及窄带周期干扰信号分辨开来,而且大大减弱并抑制了交叉干扰项的影响,保持了更高的时频分辨率和时频聚集
性,从而验证了重排 Cohen类时频变换方法的有效性。
(In order to express the partial discharge ( PD) information of gas insulated switchgear ( GIS) in time-frequency
domain, weintroduced theCohen? s class bilinear time-frequency distribution and its reassigned time-frequency
transform method to pick up and distinguish theultrasonic signals in field from the whitenoises and narrow band
periodic interference signals using the acousticemission ( AE) technology. After the processing of the simulated and
PD ultrasonic signals in field, and according to the stationary feature of white noises and narrow band interference
signals, wedraw a conclusion that the reassigned time-frequency distribution method can not only distinguish thePD
signal from back ground noises and narrow band interference signals, but also decrease and restrain the influenceof
cross-items, and acquire better time
)
- 2013-06-17 09:57:55下载
- 积分：1
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Resizing-an-Image
Resizing an Image in simulink blocks
- 2015-02-06 15:42:33下载
- 积分：1
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EEG_BP2
使用BP神经网络算法对脑电信号进行分类识别。(BP neural network algorithm using EEG classification.)
- 2014-10-10 09:25:22下载
- 积分：1
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code
code for maximum likelihood detection
- 2013-12-08 03:54:18下载
- 积分：1
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DFT
MATLAB 的有限序列的离散傅里叶变换（DFT）源程序(MATLAB finite sequence of discrete Fourier transform (DFT) source)
- 2007-08-01 10:33:54下载
- 积分：1
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chapter-two
matlab有限元结构动力分析与工程应用 第二章源程序(matlab finite element structural dynamic analysis and engineering application source code chapter)
- 2011-11-24 16:42:06下载
- 积分：1
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draw
说明： 电磁场有限元分析的剖分程序代码，可以对剖分程序进行画图。(Subdivision of finite element analysis code)
- 2010-04-05 11:26:38下载
- 积分：1
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upload
Contain Matlab files in digital steganography
- 2009-05-01 17:58:34下载
- 积分：1
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minRSS
这个小程序可以简单的选取回归分析中box-cox变换的lambda值，通过matlab强大的矩阵运算功能可以通过简单比较RSS值的方式来得到lambda，使用时只需要输入实验值矩阵X和Y即可，然后输入minRSS（X，Y）就能简单明了的看到最优变换参数
（这个程序虽然小但是学习回归分析的初学者学习时都会经过这个算法，上载时因为不到1KB所以我又放了个文本格式的）(This little program can select a simple regression analysis of box-cox transformation of lambda values, through the powerful matlab function matrix calculation can be relatively simple way of RSS to get the value of lambda, the use of only need to enter the experimental data matrix X and Y can be , and then enter the minRSS (X, Y) will be able to see the simple optimal transformation parameters)
- 2009-05-21 14:51:00下载
- 积分：1
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matlabzhongwenhelp
matlab的中文帮助，对于matlab的使用者很有帮助(Chinese matlab help matlab users for helpful)
- 2008-08-09 19:39:09下载
- 积分：1
