公开(公告)号：US4416017A

公开(公告)日：1983-11-15

申请号：US222459

申请日：1981-01-05

申请人： Steven C. Jasper ,  Robert V. Janc ,  David S. Robins ,  Michael H. Retzer

发明人： Steven C. Jasper ,  Robert V. Janc ,  David S. Robins ,  Michael H. Retzer

IPC分类号： H04B1/10 ,  G01S1/24 ,  G01S5/10 ,  H04B1/12 ,  H04B15/00

CPC分类号： G01S1/245 ,  H04B1/123

摘要： A method and apparatus for attenuating an interfering signal corrupting a desired Loran C signal is provided. An interfering signal sample is determined which occurs at the peak of the autocorrelation function of the interfering signal such that the period of the interferer is known. The sample occurring at the peak of the autocorrelation function is added to or subtracted from the desired Loran C signal sample taken at a predetermined reference point during the pulses thereof such that the interfering signal is cancelled or substantially attenuated.

摘要翻译： 提供了一种用于衰减干扰信号的方法和装置，其破坏了所需的罗兰C信号。 确定发生在干扰信号的自相关函数的峰值处的干扰信号样本，使得干扰源的周期是已知的。 在自相关函数的峰值处出现的样本被添加到或从其在脉冲期间在预定参考点处获取的期望的Loran C信号样本中减去，使得干扰信号被消除或基本上衰减。