Description: 用LMS算法实现对自适应谱线增强器的仿真，自适应谱线增强器与陷波器的基本原理-LMS algorithm with adaptive line enhancer of the simulation, adaptive line enhancer with the basic principles of notch filter Platform: |
Size: 1024 |
Author:pengxiaoqing |
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Description: 自适应陷波器的仿真程序源码，初级入门的的matlab仿真程序源码 可直接使用。
-Adaptive notch filter simulation program source code, the primary entry of the Matlab simulation program source can be used directly. Platform: |
Size: 1024 |
Author:xpntt |
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Description: 自适应陷波滤波器对地震信号中的50Hz工频干扰的消除。-Adaptive notch filter to seismic signal in the 50Hz interference elimination Platform: |
Size: 1024 |
Author:Johnson |
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Description: 利用自适应陷波器滤去信号中的50Hz工频干扰-The use of adaptive notch filter filtered signal 50Hz frequency interference Platform: |
Size: 1024 |
Author:zhanghehe |
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Description: 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 Platform: |
Size: 313344 |
Author:邵曈 |
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Description: 利用TMS320VC5509A为核心的DSP处理硬件,通过软件实现自适应Notch滤波和瞬时频率序列方差检测(VIRD)运算,在较低信噪比使用条件下完成对单频测距信号的可靠检测和判定-Using tms320vc5509a DSP core processing hardware, adaptive notch filter and variance of instantaneous frequency sequence detection (Vird) operation is realized by software, in low signal to noise ratio under the conditions of use complete reliable detection of single frequency ranging signal and judging Platform: |
Size: 72704 |
Author:CaoYu |
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Description: 在原始正弦信号中加入线频干扰，后通过自适应陷波器输出，最后计算信号误差，程序可直接出图并有详细注释(The line frequency interference is added to the original sinusoidal signal, and then output by adaptive notch filter. Finally, the signal error is calculated. The program can be directly plotted with detailed notes) Platform: |
Size: 1024 |
Author:王德英 |
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