Description: 单频干扰陷波器源码。自适应陷波器,与一般陷波器比较，有两大优点：（1）能够自适应地准确跟踪干扰频率。
（2）容易控制带宽.-Single-frequency notch filter interference source. Adaptive Notch Filter, Notch Filter with the general comparison, there are two main advantages: (1) can be adaptively tracking the exact frequency interference. (2) easy to control bandwidth. Platform: |
Size: 9216 |
Author:李强 |
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Description: 抑制单频干扰陷波器，没有解压密码，能够 自适应 检测单频干扰的存在 -Single-frequency interference suppression notch filter, there is no decompression password to adaptive testing the existence of single-frequency interference Platform: |
Size: 1024 |
Author:杨竟 |
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Description: 利用自适应陷波器对引入单频干扰的原始正弦信号进行恢复-The use of adaptive notch filter for the introduction of single-frequency interference for the restoration of the original sinusoidal signal Platform: |
Size: 1024 |
Author:mengxiao |
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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),为此我们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.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。
-Wideband signals in the traditional sinusoidal interference suppression method is to use a notch filter (notch filter), that we need to know precisely the frequency of sinusoidal interference. However, when the disturbance frequency is slow sinusoidal changes, and the frequency characteristics of the election request is very acute, is the best use of adaptive noise cancellation method. with a second-order FIR of the LMS adaptive filter to eliminate sinusoidal interference in a program. Platform: |
Size: 1024 |
Author:wangming |
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Description: 利用自适应陷波器来消除通信系统中的工频干扰。重点从LMS算法的步长因子、信号与干扰的频率差、参考输入的幅值和相位等几个方面讨论单频陷波器的滤波效果。另外，还以双频为例，讨论了多频级联型陷波器的特性，证实了经过两次滤波后，信号可被真实的恢复出来，且误差收敛趋于稳定。-The use of adaptive notch filter to eliminate the communication system frequency interference. LMS algorithms focus from step factor, the frequency difference signal and interference, refer to the input amplitude and phase of discussions on several aspects of single-frequency notch filter of the filtering effect. In addition, in order to dual-band, for example, discussed the multi-frequency cascade notch filter characteristics, confirmed the filtered twice, the signal can be restored out of true, and the error convergence stable. Platform: |
Size: 4096 |
Author:刘翔 |
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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: 自适应频域陷波技术的MATLAB程序，可对强干扰环境下的雷达窄带干扰进行抑制。代码完整，有详细注释。-Adaptive frequency domain notch technology of MATLAB program, can be a strong interference in the environment of radar narrowband interference suppression. Code complete, detailed notes. Platform: |
Size: 1024 |
Author:long |
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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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