公开(公告)号：US5304940A

公开(公告)日：1994-04-19

申请号：US901566

申请日：1992-06-19

申请人： Yasuhiro Harasawa ,  Tetsuo Kirimoto ,  Yoshimasa Oh-Hashi

发明人： Yasuhiro Harasawa ,  Tetsuo Kirimoto ,  Yoshimasa Oh-Hashi

IPC分类号： G01S7/32 ,  G01S7/292 ,  G01S13/524 ,  G01S13/53 ,  H04K3/00 ,  H03K13/00

CPC分类号： G01S7/2921 ,  G01S13/5246

摘要： An unwanted signal suppression device is disclosed for suppressing unwanted signals in input signals containing desired and unwanted signals. The input signals are divided into segments in the time domain. The device includes a unit for detecting the segment having maximum power, a unit for computing reflection coefficients on the basis of the segments except the detected power segment, and a lattice filter for suppressing the unwanted signals by using the computed reflection coefficients. A second device includes a reflection coefficient computing unit, a median filter and a lattice filter. A third device includes a unit for estimating unwanted signals frequency, a filter for computing filter weights on the basis of the estimated frequency and filter coefficients and for applying the computed weights to the input signals so as to suppress the unwanted signals.

摘要翻译： 公开了一种不需要的信号抑制装置，用于抑制包含期望和不需要的信号的输入信号中的不需要的信号。 输入信号在时域中分为段。 该装置包括用于检测具有最大功率的段的单元，用于基于除检测到的功率段之外的段来计算反射系数的单元和用于通过使用所计算的反射系数来抑制不需要的信号的网格滤波器。 第二装置包括反射系数计算单元，中值滤波器和网格滤波器。 第三装置包括用于估计不需要的信号频率的单元，用于基于估计的频率和滤波器系数来计算滤波器权重的滤波器，以及用于将所计算的权重施加到输入信号，以便抑制不需要的信号。