上海海岸电台授时信号单元的研制  

A Time Service Signal Unit Developed for Shanghai Seacoast Broadcasting Station

作　　者：赵明渊[1] 胡永辉[1] 翟慧生[1] 陈永奇[1] 

机构地区：[1]中国科学院国家授时中心

出　　处：《时间频率学报》2007年第1期1-8,共8页Journal of Time and Frequency

摘　　要：围绕着为上海海岸电台研制授时信号单元的任务,对新国际式报时格式作了简要介绍,提出了基于远程拨号通讯的时间传递方案。依据该方案,以嵌入式调制解调器(Modem)和32位嵌入式处理器为核心完成了授时信号单元的软、硬件设计。讨论了通讯双方的握手方式和链路时延测定方法。实现了上海海岸电台时间信号对国家授时中心标准时间的溯源。Around the task of developing a time service signal unit for Shanghai Seacoast Broadcasting Station, the new international time signal format is introduced briefly, and a scheme for time transfer based on remote dial communication is presented. In accordance with the scheme, the hardware and software of the time service signal unit are completed with the embedded modem and 32-bit embedded processor as key parts. The handshake modes for both sides in communication and the measure method for link delay are discussed. Tracing to the source of standard time of NTSC （National Time Service Center） for the time signal of the Shanghai Seacoast Broadcasting Station is achieved.

关 键 词：远程拨号通讯 授时 调制解调器 AT指令 

分 类 号：TN931[电子电信—信号与信息处理]