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segmentation
segmentation of licence plate character
- 2011-05-06 20:09:35下载
- 积分:1
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DSPII_USTC_01
传统的宽带信号中抑制正弦干扰的方法是采用陷波器(notch filter),为此需要精确知道干扰正弦的频率.然而当干扰正弦频率是缓慢变化时,且选频率特性要求十分尖锐时,则最好采用自适应噪声抵消的方法.下图是用一个二阶FIR的LMS自适应滤波器消除正弦干扰的一个方案。该代码实现了以下功能:
1) 借助MATLAB画出了滤波器的误差性能曲面和误差性能曲面的等值曲线;
2) 给出了最陡下降法以及LMS算法的计算公式;
3) 用MATLAB产生了方差为0.05, 均值为0白噪音S(n),并画出某次采样得到的波形;
4) 根据 2)中的公式,并利用 3)中产生的S(n),在 1)中的误差性能曲面的等值曲线上叠加画出了采用最陡下降法以及LMS法时H(n)的在叠代过程中的轨迹曲线;
5)用MATLAB计算并画出了LMS法时误差随时间n的变化曲线(对应S(n)的某一次的一次实现)和e(n)波形;
6)在 1)中的误差性能曲面的等值曲线上,叠加画出采用LMS法得到的100次实验中的H(n)的平均值的轨迹曲线;
7)最终对结果进行了分析,具体见压缩包的word文档。
(Wideband signal in the conventional sinusoidal interference suppression method is the use notch filter (notch filter), this requires precise knowledge of the frequency of a sinusoidal interference . However, when the interference frequency sinusoidal changes slowly , and the selected frequency characteristic requirements are very sharp , then best use of adaptive noise cancellation method . following figure is a second-order FIR LMS adaptive filter to eliminate a program sinusoidal interference . The code implements the following functions:
A ) draw with MATLAB error performance of the filter surface and the surface contour error performance curve
2 ) gives the steepest descent method and the LMS algorithm formula
3 ) generated using MATLAB variance of 0.05 with a mean of 0 white noise S (n), and draw a particular sampling waveform
4 ) based on 2 ) of the formula , and use 3 ) generated in S (n), in a ) the error performance curves superimposed on the surface contour pl)
- 2013-11-06 13:12:36下载
- 积分:1
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ga-tool3
基于matlab的关于遗传算法的一些重要的函数的m文件,供读者参考
(Based on some of the important matlab m file on genetic algorithm function for readers reference)
- 2013-12-23 14:18:19下载
- 积分:1
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biehang_v22
利用matlab写成的窄带噪声发生,处理信号的时频分析,窗函数法设计一个数字带通FIR滤波器。( Using matlab written narrowband noise occurs, When processing a signal frequency analysis, A window function design FIR digital band-pass filter.)
- 2016-10-07 16:54:07下载
- 积分:1
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testukf
用于UKF的matlab程序,希望对大家有点帮助,我也是试着修改的(ukf matlab programm)
- 2009-02-18 21:58:32下载
- 积分:1
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MATLABsimulik
这是一本电子书,书名叫应用MATLAB建模和仿真,看了一下,感觉还不错!和大家分享!(This is an e-book, entitled Application of MATLAB modeling and simulation, look, I feel pretty good! And everyone to share!)
- 2007-11-13 16:06:16下载
- 积分:1
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emotion_stead
我自己毕业设计编写的,关于人工情感建模的MATLAB程序(I have written in graduate design, MATLAB modeling of artificial emotions procedures)
- 2011-04-19 09:45:05下载
- 积分:1
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Digital-baseband
数字频带传输系统matlab指导程序和例程(Band digital transmission systems matlab program guide)
- 2013-09-02 20:31:45下载
- 积分:1
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wimax-mimo
codage matlab winmax mimo
- 2009-10-18 23:33:44下载
- 积分:1
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3.m
pdetool编程及实现, 用它可以实现一定的编程与实现。(pdetool programming and implementation of programming and implementation, you can use it.)
- 2013-02-04 08:05:58下载
- 积分:1