采用GPS秒脉冲同步的TDMA车辆定位通讯协议  

Vehicle Monitoring Communication Protocol on TDMA and GPS PPS Synchronization

作　　者：李娟[1] 邢建平[1] 李伟业 矫亦林[1] 程合彬[1] 

机构地区：[1]山东大学信息科学与工程学院,山东济南250100 [2]山东泉茂经贸有限公司,山东济南250001

出　　处：《山东交通学院学报》2005年第4期60-64,共5页Journal of Shandong Jiaotong University

摘　　要：提出了一种基于TDMA的大区制单频点实现车辆监控系统的通信方式,分别从物理层、链路层和网络层给出了在监控系统中所采用的通信协议;并就协议中的CRC校验、通讯车载电台PTT建立时间、GPS OEM板的秒脉冲信号用于系统同步、报警争用策略等关键问题进行了详细的分析;最后通过了系统实现与验证。A communication method that is used in vehicle monitoring system is proposed based on the big- section and single frequency of TDMA. The communication protocols among physical level, data - link level and network level which are adopted in the monitoring system are given respectively. Some key technologies are discussed, such as CRC detecting, set - up time of PTF, second pulse signal of GPS OEM board that are used in system synchronization and warning- handling system. At the end, the system is verified.

关 键 词：TDMA 大区制 GPS 秒脉冲 协议 

分 类 号：U491.5[交通运输工程—交通运输规划与管理]