一种TDDM扩频方式下BOC调制信号的同步方法  

A Synchronization Method of TDDM Spread Spectrum Frequency and BOC Modulation Signal

作　　者：刘芳[1,2] 冯永新[1] 潘成胜[2] 

机构地区：[1]沈阳理工大学通信与网络工程中心,辽宁沈阳110168 [2]南京理工大学自动化系,江苏南京210094

出　　处：《兵工学报》2010年第6期825-831,共7页Acta Armamentarii

摘　　要：关于时分数据调制(TDDM)扩频方式下二进制偏移载波(BOC)调制信号(简称T-B信号)的同步接收问题,目前还没有较好的解决方案。针对传统同步方法在TDDM方式下成功概率低,无法满足TDDM扩频方式接收要求的问题,提出了一种T-B信号同步方法。根据T-B信号的特点,采用粗同步、精同步的方法对T-B信号进行处理实现信号的直捕和跟踪。仿真结果表明,此方法解决了T-B信号的直捕及跟踪问题,且输出导航电文的正确率大于98%.Currently, the better synchronization receiving solution of time division data modulation （TD- DM） signal has not appeared. A synchronization method based on T-B signal was proposed, considering the low success probability problem of traditional synchronization methods for TDDM signal, which synchronization receiving requirements can not be met. According to the characteristics of T-B signal, the coarse synchronization and the precise synchronization methods were used to achieve T-B signal direct acquisition and tracking. The simulated results show that the problems of direct acquisition and tracking T- B signal can be resolved, and the output accuracy of the navigation data is more than 98%.

关 键 词：通信技术 时分数据调制 二进制偏移载波 直捕 跟踪 导航电文 

分 类 号：TN914.53[电子电信—通信与信息系统] TN96[电子电信—信息与通信工程]