| 一种新的软件实现PCM/FM码同步的方法 |
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| 作者姓名： | 冯春燕 袁嗣杰 |
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| 作者单位： | 装备指挥技术学院航天测控中心 北京101416
(冯春燕)，装备指挥技术学院航天测控中心 北京101416(袁嗣杰) |
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| 摘 要： | 根据PCM/FM信号的特点,提出一种软件提取码同步信号的新方法。该方法使用数字瞬时测频法检测信 号每采样点的频率,根据该频率与中心频率之差提取双边沿信号,并用一个除N记数器,得到完整的码同步信号。文中 给出全数字码同步器原理图、MATLAB仿真的性能曲线图和VC实现的软件流程。
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| 关 键 词： | PCM/FM 数字瞬时测频[1] 码同步 |
A New Method to Realize Bit Synchronization of PCM/FM |
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| Authors: | Feng Chunyan Yuan Sijie |
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| Institution: | Feng Chunyan Yuan Sijie |
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| Abstract: | According to the characteristics of PCM/FM signal,this paper proposes a new algorithm to realize bit synchronization.This method uses digital instantaneous frequency measurement to compute the frequency value,then the tested frequency is compared with the Carrier frequency,the difference is used to draw the dual-edage signal.Used with a special recorder,a complete bit synchronige signal is realized. The Principle chart of digital bit synchronization,capability graph of the algorithm and flow chart of software realization are given. |
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| Keywords: | PCM/FM Digital instantaneous frequency measurement Bit Synchronization |
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