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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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FUPID
这一程序内涵模糊控制器的FIS程序,可以做基于此做PIDmatlab仿真。(This program connotation fuzzy controller fis program, you can do based on this PID simulation.)
- 2015-01-22 17:23:24下载
- 积分:1
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AlphaBetaFilter
alpha-beta滤波器的仿真程序,在雷达数据处理中有广泛应用。
本程序还比较了不同alpha-beta滤波器的性能。(This is a program about alpha-beta filter in radar data processing. )
- 2012-04-17 13:20:18下载
- 积分:1
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simplex-matlab(1)
实现数值分析中单纯形法改进方法的matlab代码,即改进单纯形法算法,能够实现大型稀疏矩阵的迭代,这是3/3..(Numerical analysis to achieve improved method simplex method matlab code that modified simplex method algorithm, to achieve large sparse matrix iteration, which is 3/3)
- 2013-09-04 08:34:44下载
- 积分:1
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3order_RLS1
说明: 最小二乘递推算法RLS,利用递推最小二乘法计算Volterra级数的核(recursive least squares algorithm RLS using recursive least squares method Volterra series of nuclear)
- 2021-03-15 14:49:22下载
- 积分:1
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MRTD2D_TE_COIF
基于2阶消失矩的Coifman小波基函数的2维MRTD电磁散射正演模型,吸收边界为PML。(Based on 2 vanishing moments of the Coifman wavelet function of 2-D MRTD forward model of electromagnetic scattering, absorbing boundary for the PML.)
- 2011-10-28 10:29:06下载
- 积分:1
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L-shaped-beam-DOA-estimation
基于增广矩阵束的L型阵列的二维DOA估计MATLAB程序(Based on the augmented matrix L-shaped beam two-dimensional array DOA estimation MATLAB program)
- 2013-09-11 09:38:25下载
- 积分:1
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Seg_Image
segmentation d une image par methode de classification
- 2015-03-21 18:48:56下载
- 积分:1
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Bin2Hex32
Convert binary to 32 bit hexa decimal value
- 2014-02-03 14:31:38下载
- 积分:1
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LT_matlab
线性喷泉码的一种——LT码,程序完整,可以在MATLAB环境中直接运行。(A kind of linear fountain code- LT codes, procedures complete, can be run directly in the MATLAB environment.)
- 2021-04-11 02:48:58下载
- 积分:1