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UWB
M-file uses random data which BPSK modulates a carrier to configure a BPSK UWB transmitter. The receiver demodulates the BPSK UWB carrier and the data is recovered
- 2008-03-18 16:08:39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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全相位apfft实验程序
说明： 全相位APFFT与传统的FFT算法对频率和相位进行估计(Frequency and phase estimation of all-phase APFFT and traditional FFT algorithm)
- 2019-02-25 14:55:03下载
- 积分：1
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无线通信多径衰落信道的Matlab仿真
通过将喷泉码的编译码方法再无线衰落信道上的用matlab仿真出来(Multi-path ruili channel simulation research on matlab)
- 2018-12-29 09:44:50下载
- 积分：1
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spec2rgb
光谱信息转换为色彩信息的MATLAB程序代码，很方便实用(good one)
- 2010-09-14 18:05:47下载
- 积分：1
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systemidentification
关于系统辨识的电子教案，内有教案中的用matlab编写的示例程序。(system identification , there are samples programmed by matlab .)
- 2009-06-29 10:45:49下载
- 积分：1
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tulunsheji
平面共轭分度凸轮机构设计计算和运动分析计算，利用matlab软件来计算凸轮主要几何尺寸。( U5E73 u7279 u8B1 u8B1 u8B09 u5A U4EF6 u5F3 u8F3 )
- 2017-04-16 10:23:23下载
- 积分：1
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蚁群算法
蚁群算法解决公交车路径规划问题的MATLAB代码实现(Ant Colony Algorithm to Solve the Problem of Bus Route Planning with MATLAB Code)
- 2021-01-05 22:28:55下载
- 积分：1
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xiandaicaisetuxiangfengejishu
图像分割是进行图像理解与分析的基础,是图像工程技术中的一个重要问题, 也是图像处理的经典难题。彩色图像比灰度图像具有
更多的视觉信息, 因而受到了越来越多的重视。文章将彩色图像的分割技术分为三大类,并分别加以系统概括, 分析了各种方法的优缺点。(Image segmentation is the image understanding and analysis of the basis of the image engineering technology is an important issue, but also the classical image processing problems. Color image than the gray image with more visual information, which are more and more attention. Article will color image segmentation techniques into three categories, and to the system were summarized, analyzed the advantages and disadvantages of each method.)
- 2010-05-12 10:25:01下载
- 积分：1
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Matlab-runcode
A new method for analysing nonlinear and non-stationary data has been developed.
The key part of the method is the `empirical mode decomposition method
with which any complicated data set can be decomposed into a nite and often
small number of `intrinsic mode functions that admit well-behaved Hilbert transforms.
This decomposition method is adaptive, and, therefore, highly ecient.
- 2014-11-29 22:18:46下载
- 积分：1
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