CDMA无线通信技术在自动授时中的应用  

Application of CDMA to Automatic Time-service

作　　者：吴雷[1] 王国华[1] 王金涛[1] 许剑锋[1] 

机构地区：[1]第二炮兵工程学院,陕西西安710025

出　　处：《无线电通信技术》2010年第4期55-57,共3页Radio Communications Technology

摘　　要：针对传统的GPS授时室内信号差、长波电台授时成本高的问题,提出了一种基于单片机与DTGS-800的码分多址(Code-Division Multiple Access,CDMA)自动授时源的设计方案,以解决GPS信号室内信号差与长波电台服务费用高的问题;重点阐述了CDMA授时方法、实现方式和自动授时源的硬件与软件设计与实现;该方法能够很好地获取授时信号,计时准确。具有室内信号好、计时精准、稳定性高、低成本等特点,可广泛地用于各种需要精确授时的设备中。Aiming at the problem of weak indoor signal of the GPS time-service and high cost of the Long-Wave Radio time-service,an implementing strategy of CDMA automatic time-service source based on singlechip processor and DTGS-800 is proposed.The principle and implementation of CDMA time-service and the design method of the hardware and software for the automatic time-service source are described emphatically.The design can provide time-service automatically and time precisely.The scheme features low cost,strong indoor signal,precise timing and high stability.It can be widely used in the equipment that needs precise time-service.

关 键 词：CDMA 自动授时 单片机 DTGS-800 

分 类 号：TN92[电子电信—通信与信息系统]