北斗卫星导航系统与GPS互备的广播电视授时单元  

Broadcast Television Time Service Unit Using Mutually Backup Synchronization Signals from Beidou Satellite Navigation and Global Positioning System

作　　者：陈孟元[1] 凌有铸[1] 王冠凌[1] 

机构地区：[1]安徽工程大学安徽省电气传动与控制重点实验室,安徽芜湖241000

出　　处：《电视技术》2010年第6期60-63,共4页Video Engineering

基　　金：安徽高等学校省级自然科学研究项目(KJ2008A101);安徽高等学校省级自然科学研究项目(KJ2009B043);芜湖市年度科技计划重点项目(2008209)

摘　　要：针对当前广播电视授时系统中存在的信息安全问题提出了一种新的授时方案。基于中国自主研发的北斗卫星导航系统获取标准时间,同时以GPS为辅助授时源并与系统本地时间进行校准,可以彻底摆脱对GPS授时的依赖。此项研究对改变国外的卫星授时系统对国内市场的垄断局面,保证信息安全,具有重要的意义。A new time service program for the current system of broadcast television time service which exist information security issue is presented in this paper. In order to obtain the standard time by using Beidou satellite navigation system, Global Positioning System （GPS） time service is used as the auxiliary source and calibrated with the local time at the same time, all of which can help to get rid of GPS time service. This research has great significance to change the condition that the overseas satellite time service system monopolizes domestic market and to guarantee the domestic information security.

关 键 词：北斗卫星导航系统 全球定位系统 广播电视 授时单元 

分 类 号：TN967.1[电子电信—信号与信息处理] TM921.51[电子电信—信息与通信工程]