摘要
卫星授时,就是指通过卫星发射或转发高精度标准时间信号的时间同步技术。文中首先分析了卫星定位和授时的原理。因为授时需要对卫星信号捕获跟踪,但由于实际的卫星不受我们控制,所以用Matlab程序通过合适的算法和参数产生仿真卫星信号,并对仿真卫星信号进行捕获跟踪处理。最后,实验中采用TD3020T模块等软硬件搭建基于北斗二代卫星的授时系统,授时系统捕获跟踪到了实际卫星报文信息,并用编写好的Matlab程序对报文信息分析处理得到纳秒级精度的标准时间信号,实现了基于北斗二代卫星的纳秒级精度授时系统。
Satellite time service is a time synchronization technique which sending or forwarding high precision standard time signals by satellite.Firstly,the principle of satellite positioning and timing is researched.Satellite signal capture and tracking are needed for satellite time service,but as a result of actual satellite is not controlled by us,so the satellite signal was produced by using Matlab program through appropriate algorithm and simulation parameters,and then the simulation of satellite signal was captured and tracked.Finally,the experiment used TD3020T module and other hardware to build timing system based on Beidou second generation satellite system,and the actual satellite message was captured and tacked by this timing system.Obtained a nanosecond precision standard time signal through the message information which was analyzed and processed by Matlab program,thus,a nanosecond precision timing system based on Beidou second generation satellites was achieved.
作者
张宝全
周枫
张少泉
ZHANG Bao-quan;ZHOU Feng;ZHANG Shao-quan(Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming 650500, China;Yunnan Power Grid Company, Kunming 650217, China)
出处
《软件》
2017年第8期107-112,共6页
Software
关键词
星授时
信号处理
信号捕获跟踪
GPS
北斗卫星系统
Satellite time service
Signal processing
Signal acquisition and tracking
GPS
Beidou satellite system
作者简介
张宝全(1991-)，男，云南曲靖人，硕士研究生，研究方向：网络与信息安全。;通讯作者: 周枫(1958-)，男，硕士，副教授，研究方向：数据挖掘、信息抽取。
