基于ASPeCT的BOC调制信号捕获与跟踪研究

摘要

Since the traditional acquisition algorithm of BOC modulating signal is fuzzy,the ASPeCT method is determined as the design scheme of the signal receiver acquisition module based on the analysis of the direct acquisition method,BPSK-Like method and ASPeCT method. The tracking loop based on BOC modulating signal was designed. On the basis of analyzing the carrier loop and code loop,the design schemes of taking phase-locked loop assisted by FLL(frequency-locked loop)as the carrier loop and taking the revised EMLP phase detector as the code loop were determined. The experiment simulation of signal tracking based on ASPeCT,phase-locked loop assisted by FLL and ASPeCT correction code loop was conducted to verify the va-lidity of capture module and tracking loop scheme.%针对BOC调制信号传统捕获算法的模糊问题,在对直接捕获法、BPSK-Like法以及ASPeCT法分析的基础上,确定了ASPeCT法作为信号接收机捕获模块的设计方案.然后设计了基于BOC调制信号的跟踪环路,在对载波环和码环分析的基础上,确定了锁频环辅助锁相环作为环路中载波环的设计方案,以及修正后的EMLP鉴相器为环路中码环的设计方案.最后,对基于ASPeCT法捕获及基于锁频环辅助锁相环、ASPeCT修正码环的信号跟踪进行了实验仿真,验证了捕获模块和跟踪环路方案的有效性.