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PEGldpc
PROGRASSIVE EDGE GROWTH 累加边增加LDPC算法(PROGRASSIVE EDGE GROWTH cumulative increase LDPC edge algorithm)
- 2007-03-20 11:52:21下载
- 积分：1
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kecheng
东南大学短学期matlab实践的教程课件 讲的不错 侧重于信号与系统(Southeast University, the practice of short-term matlab tutorial about the courseware good focus on signals and systems)
- 2011-09-30 13:34:11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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jieyuexiangying
阶跃相应绘图，可以调整波形，画出bode图(Step the corresponding drawings, waveforms can be adjusted, to draw bode diagram)
- 2009-03-19 20:10:22下载
- 积分：1
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MATLAB-operate-base
说明： MATLAB以矩阵作为数据操作的基本单位，还提供了十分丰富的数值计算函数。MATLAB和著名的符号计算语言Maple相结合，使得MATLAB具有符号计算功能。(MATLAB with matrix as the basic unit of data manipulation, it also provides a very rich numerical functions. MATLAB and the famous combination of symbolic computation language Maple, MATLAB has a symbolic computing makes.)
- 2011-02-23 19:46:50下载
- 积分：1
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matlab
matlab 通信原理 sa函数波形仿真 周期矩形脉冲幅度谱 含源码(sa communication theory matlab function waveform simulation cycle rectangular pulse amplitude spectrum including source code)
- 2015-01-07 13:44:06下载
- 积分：1
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eof
对数据作eof的matlab函数，进行数据处理，以得到数据的空间模态和时间系数(Matlab function of eof)
- 2013-12-03 21:59:48下载
- 积分：1
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AoA_Test1
AoA simulation using matlab
- 2016-04-06 14:31:42下载
- 积分：1
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bakecodemohuhanshu
通过时频转换法来，来画BPSK巴克码的模糊函数，tao（时延）切面，fd（多普勒频移）切面。以及其模糊度图的画法(Through the time-frequency conversion method to draw Barker code BPSK ambiguity function, tao (delay) section, fd (Doppler shift) section. And its ambiguity diagram drawing)
- 2020-11-17 19:29:40下载
- 积分：1
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RTF
卫星轨迹仿真，对卫星环绕轨迹进行动态仿真，真实再现卫星的环绕轨迹(Satellite trajectory simulation)
- 2014-09-14 23:10:12下载
- 积分：1
