高精度秒脉冲同步系统的实现

The Implementation of High-precision Second Pulse Synchronous System

随着现代技术的发展,时间同步系统在实际工程应用中扮演着越来越重要的角色。笔者在阐述了时间同步的基础上,设计了一种高精度秒脉冲信号的生成和接收的方案。在信号生成端,对信号同时进行粗码、精码和载波的调制,在信号的接收端,首先对粗码进行捕获跟踪,在完全跟踪上粗码之后,将跟踪上的码相位作为开始跟踪精码的初始相位,来跟踪精码。本系统中,秒脉冲信号对齐度可以达到纳秒级。

With the development of the modern technology,time synchronization system plays an increasingly important role in the practical application.Based on the time synchronization,a scheme of generating and receiving a high-precision second pulse signal is designed in this paper.At the signal generator,the signal is modulated by both coarse/precise code and carrier.At the receiving end of the signal,the coarse code is firstly captured and tracked.After the completely tracking of the coarse code,the code phase of the coarse code is used as the initial phase of the fine code to start tracking.In this system,the degree of alignment of the second pulse signal can be achieved.