猝发式直扩系统载波同步技术研究  

Research of Carrier Synchronization in Burst-mode DSSS System

作　　者：张福洪[1] 吴铭宇[1] 易志强[1] 

机构地区：[1]杭州电子科技大学通信工程学院,浙江杭州310018

出　　处：《杭州电子科技大学学报（自然科学版）》2012年第4期41-44,共4页Journal of Hangzhou Dianzi University：Natural Sciences

基　　金：浙江省教育厅资助项目(Y201018592)

摘　　要：为了解决猝发式直扩系统中大频偏情况下信号载波的捕获和跟踪问题,该文提出了一种集扫频、锁频环和锁相环技术相结合的载波同步方案。在理论上对该方案进行详细分析后,基于MATLAB平台进行方案的仿真验证。结果表明,该方案可以满足系统设计要求,具有较高的实际应用价值。A scheme is proposed in this paper to achieve cartier synchronization based on sweeping frequen- cy, digital FLL and digital PLL, in order to solve the problem of carrier acquisition and tracking under large frequency offset circumstance in burst-mode DSSS system. The scheme is simulated and validated in feasibility with MATLAB platform after detailed theoretical analysis. The results show that the scheme can meet the sys- tem design, which is of much practical value.

关 键 词：多普勒效应 扫频 数字锁频环 数字锁相环 载波同步 

分 类 号：TN92[电子电信—通信与信息系统]