pinyuxiangguan

代码说明：

  这是频域副本相关的代码，给予信号同样长度的副本，使得信号在相关后可以恢复，先是通过滤波器，然后找出信号点。(This is related to the frequency domain replica code, a copy of the same length given signal so that the signal can be restored after correlation, first through a filter, and then identify the signal points.)