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Relize_Fourier_Transform
用来实现二维离散傅里叶变换的简单实用程序，在matlab中能快速得到理想结果(To realise 2-D Discrete wavelets transform，easily and effective to reach the ideal result we want！)
- 2011-10-27 10:09:54下载
- 积分：1
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2D_TE_PML
二维圆柱形光子晶体波导TE波MATLAB仿真(Two-dimensional cylindrical photonic crystal waveguide TE wave simulation)
- 2013-09-25 10:07:01下载
- 积分：1
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ex923
Experiments conducted in my lab about digital image processing
- 2010-07-09 14:24:22下载
- 积分：1
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456773889889
说明： matlab 书籍源码matlab 书籍源码matlab 书籍源码(Source Books Source Books matlab matlab matlab source books)
- 2010-03-31 10:02:46下载
- 积分：1
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shinners
this file about turbine modeling
- 2012-05-07 17:09:34下载
- 积分：1
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chengxu
小波变换进行变速箱故障诊断
首先将s1和s2信号时域谱（s1代表维修前的振动信号，s2代表维修后的振动信号），画出来进行对比，会发现s1信号的振动幅值会比较高；然后对s1和s2分别进行小波分解并画出各层的时域谱，只对比s1和s2分后的最高时域谱，s2更加的具有周期性，且幅值较小，s2周期性不够明显，且振动过于密集。分析完时域谱后开始分析频谱，首先对原信号s1和s2fft转换，得到频谱图，如图，然后再对小波分析后高频部分进行fft转换，做出频谱图。对比后我们发现，在f 2375HZ出（也就是齿轮的啮合频率），s1信号频谱幅值会有急剧的升高，然后，其谐波的幅值也会增大。所以可以推断出该维修前的增速箱的齿轮可能出现问题。(Gearbox fault diagnosis based on wavelet transform s1 and s2 first time domain signal spectrum (s1 behalf of the vibration signal before maintenance, vibration signal s2 representative of repaired), drawn comparison, you will find a signal s1 vibration amplitude will be higher then s1 and s2 respectively wavelet decomposition and draw the layers of time-domain spectrum to only a maximum time domain spectroscopy s1 and s2 points after, s2 is more cyclical and smaller magnitude, s2 cyclical enough obviously, and the vibration is too dense. End domain spectral analysis after the beginning of the spectrum analysis, the first of the original signal s1 and s2fft conversion to give the spectrum, as shown, and then after the high frequency part of wavelet analysis fft transformation to make spectrum. We found that after the comparison, at f 2375HZ out (i.e. the gear mesh frequency), there will be a sharp increase in the amplitude spectrum of the signal s1, and then, the amplitude of the ha)
- 2017-01-17 19:18:02下载
- 积分：1
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luisan
非常适合计算机视觉方面的研究使用,利用自然梯度算法，可实现对二维数据的聚类。( Very suitable for the study using computer vision, Use of natural gradient algorithm, Can realize the two-dimensional data clustering.)
- 2016-06-18 19:09:08下载
- 积分：1
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TD_SCDMA--location-algorithm
说明： td-scdma定位算法研究与仿真，td-scdma定位算法研究与仿真(td-scdma localization algorithm and simulation, td-scdma Location Algorithm and Simulation)
- 2011-03-13 16:05:34下载
- 积分：1
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Matlab
说明： MATLAB 巴特沃斯低通滤波对图像进行低通滤波处理(matlab)
- 2010-04-26 10:36:45下载
- 积分：1
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plate-tilt-correction
说明： 车牌倾斜校正程序，将车牌边界与图像边界不平行的图像进行旋转，使其平行，可用于车牌识别。(Plate tilt correction procedure, the plate boundary is not parallel with the image border to rotate the image, a parallel can be used for license plate recognition.)
- 2011-03-01 09:26:38下载
- 积分：1
