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1. 发明授权

US4600303A Method in the signal processing of a received train of pulses, and a receiver for carrying out the process 失效
标题翻译：对接收的脉冲序列进行信号处理的方法以及用于执行该过程的接收机
公开(公告)号：US4600303A
公开(公告)日：1986-07-15
申请号：US598297
申请日：1984-04-02
申请人： Gregers E. Mogensen
发明人： Gregers E. Mogensen
IPC分类号： G01M11/00 , H04B10/07 , G01N21/00 , H04B9/00
CPC分类号： H04B10/07
摘要： A method in signal processing of a train of pulses with a stable, high repetition frequency f.sub.r, in particular in connection with dispersion measurements of optical fibers, comprises sampling (1) of the received signal at a sampling frequency f.sub.s, wheref.sub.s =(f.sub.r .+-..DELTA.f)/n(n is an integer and .DELTA.f is several magnitudes smaller than f.sub.r). When the sampling frequency is generated by a pulse generator (3), which, through a phase-detecting circuit (4), depends on partly a reference signal (from the oscillator 6) and partly a low frequency signal derived (via 5) from the signal received and sampled at the frequency f.sub.s, a stable sampling frequency is obtained even though the signal/noise ratio on the input of the receiver is significantly smaller than was permissible in the past. When the method is to be carried out within a relatively narrow repetition frequency range, the oscillator (6) is preferably replaced by a frequency dividing circuit designed to generate a reference signal by division of the sampling frequency.
摘要翻译： PCT No.PCT / DK83 / 00075 Sec。 1984日期1984年4月2日 102（e）日期1984年4月2日PCT提交1983年8月4日PCT公布。出版物WO84 / 00613 日期：1984年2月16日。一种具有稳定的高重复频率fr的脉冲序列的信号处理方法，特别是与光纤的色散测量结合在一起的方法包括以采样频率对接收信号进行采样（1） fs，其中fs =（fr +/- DELTA f）/ n（n是整数，DELTA f比fr小几个数值）。当脉冲发生器（3）产生采样频率时，脉冲发生器（3）通过相位检测电路（4）部分地依赖于来自振荡器6的参考信号（部分地取决于来自振荡器6的参考信号）以频率fs接收和采样的信号，即使接收机输入端的信号/噪声比明显小于过去允许的信号/噪声比，也获得稳定的采样频率。当该方法要在相对较窄的重复频率范围内进行时，振荡器（6）优选地被设计成通过采样频率除法产生参考信号的分频电路代替。

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