Signal notch method based on Hankel matrix and SVD
基于构造Hankel矩阵的SVD陷波方法*

This paper proposed a novel signal notch method based on structure Hankel matrix and SVD by adding a guide signal. Used the original signal to structure Hankel matrix, the frequency components of the signal could correspond to certain singular values after the SVD transformation, and proposed a method to add a certain frequency signal to make the component become the principal one, then could eliminate the certain frequency component by removing the corresponding singular values. Lastly, achieved a good effect when used the method to process 50 Hz frequency trap of the MEG signal, and the method is not affected by the traditional filter notch deeper the more bandwidth restriction.