高动态多进制扩频信号的载波跟踪技术研究  

Study of Carrier Tracking for High Dynamic M-ary Spread Spectrum Signals

作　　者：黄烈超[1] 张天骐[1] 谭方青[1] 余熙[1] 

机构地区：[1]重庆邮电大学信号与信息处理重庆市重点实验室,重庆400065

出　　处：《电视技术》2012年第3期114-117,共4页Video Engineering

摘　　要：针对高动态环境下多进制扩频信号的载波同步问题,在分析锁相环(PLL)和锁频环(FLL)环路各自优点的基础上,研究了采用锁频环和锁相环相结合的方式进行载波信号跟踪。利用FLL动态适应能力较强和PLL具有较好跟踪精度的特点,实现动态信号的快速、精确跟踪。理论分析和仿真结果表明,该方法具有良好的跟踪效果。For the question of carrier synchronization of high-dynamic M-ary spread spectrum signals, based on analyzing the advantages of PLL and FLL, a new method of carrier tracking combining FLL with PLL is presented in this paper. The dynamics of the signal can be removed by FLL,and the phase can be tracked precisely by PLL. Theory analysis and simulation results show that this method has the favorable effect.

关 键 词：高动态 多进制扩频 载波跟踪 锁频环 锁相环 

分 类 号：TP274.2[自动化与计算机技术—检测技术与自动化装置]